diff --git a/backend/packages/harness/deerflow/community/infoquest/infoquest_client.py b/backend/packages/harness/deerflow/community/infoquest/infoquest_client.py
index 88269bc..0fd6e8d 100644
--- a/backend/packages/harness/deerflow/community/infoquest/infoquest_client.py
+++ b/backend/packages/harness/deerflow/community/infoquest/infoquest_client.py
@@ -17,13 +17,15 @@ logger = logging.getLogger(__name__)
 class InfoQuestClient:
     """Client for interacting with the InfoQuest web search and fetch API."""
 
-    def __init__(self, fetch_time: int = -1, fetch_timeout: int = -1, fetch_navigation_timeout: int = -1, search_time_range: int = -1):
+    def __init__(self, fetch_time: int = -1, fetch_timeout: int = -1, fetch_navigation_timeout: int = -1, search_time_range: int = -1, image_search_time_range: int = -1, image_size: str = "i"):
         logger.info("\n============================================\n🚀 BytePlus InfoQuest Client Initialization 🚀\n============================================")
 
         self.fetch_time = fetch_time
         self.fetch_timeout = fetch_timeout
         self.fetch_navigation_timeout = fetch_navigation_timeout
         self.search_time_range = search_time_range
+        self.image_search_time_range = image_search_time_range
+        self.image_size = image_size
         self.api_key_set = bool(os.getenv("INFOQUEST_API_KEY"))
         if logger.isEnabledFor(logging.DEBUG):
             config_details = (
@@ -32,6 +34,8 @@ class InfoQuestClient:
                 f"├── Fetch Timeout: {fetch_timeout} {'(Default: No fetch timeout)' if fetch_timeout == -1 else '(Custom)'}\n"
                 f"├── Navigation Timeout: {fetch_navigation_timeout} {'(Default: No Navigation Timeout)' if fetch_navigation_timeout == -1 else '(Custom)'}\n"
                 f"├── Search Time Range: {search_time_range} {'(Default: No Search Time Range)' if search_time_range == -1 else '(Custom)'}\n"
+                f"├── Image Search Time Range: {image_search_time_range} {'(Default: No Image Search Time Range)' if image_search_time_range == -1 else '(Custom)'}\n"
+                f"├── Image Size: {image_size} {'(Default: Medium)' if image_size == 'm' else '(Custom)'}\n"
                 f"└── API Key: {'✅ Configured' if self.api_key_set else '❌ Not set'}"
             )
 
@@ -295,17 +299,106 @@ class InfoQuestClient:
                 images_results = results["images_results"]
                 for result in images_results:
                     clean_result = {}
-                    if "image_url" in result:
-                        clean_result["image_url"] = result["image_url"]
+                    if "original" in result:
+                        clean_result["image_url"] = result["original"]
                         url = clean_result["image_url"]
                         if isinstance(url, str) and url and url not in seen_urls:
                             seen_urls.add(url)
                             clean_results.append(clean_result)
                             counts["images"] += 1
-                    if "thumbnail_url" in result:
-                        clean_result["thumbnail_url"] = result["thumbnail_url"]
-                    if "url" in result:
-                        clean_result["url"] = result["url"]
+                    if "title" in result:
+                        clean_result["title"] = result["title"]
         logger.debug(f"Results processing completed | total_results={len(clean_results)} | images={counts['images']} | unique_urls={len(seen_urls)}")
 
         return clean_results
+
+    def image_search_raw_results(
+        self,
+        query: str,
+        site: str = "",
+        output_format: str = "JSON",
+    ) -> dict:
+        """Get image search results from the InfoQuest Web-Search API synchronously."""
+        headers = self._prepare_headers()
+
+        params = {"format": output_format, "query": query, "search_type": "Images"}
+
+        # Add time_range filter if specified (1-365)
+        if 1 <= self.image_search_time_range <= 365:
+            params["time_range"] = self.image_search_time_range
+        elif self.image_search_time_range > 0:
+            logger.warning(f"time_range {self.image_search_time_range} is out of valid range (1-365), ignoring")
+
+        # Add site filter if specified
+        if site:
+            params["site"] = site
+
+        # Add image_size filter if specified
+        if self.image_size and self.image_size in ["l", "m", "i"]:
+            params["image_size"] = self.image_size
+        elif self.image_size:
+            logger.warning(f"image_size {self.image_size} is not valid, must be 'l', 'm', or 'i'")
+
+        response = requests.post("https://search.infoquest.bytepluses.com", headers=headers, json=params)
+        response.raise_for_status()
+
+        # Print partial response for debugging
+        response_json = response.json()
+        if logger.isEnabledFor(logging.DEBUG):
+            response_sample = json.dumps(response_json)[:200] + ("..." if len(json.dumps(response_json)) > 200 else "")
+            logger.debug(f"Image Search API request completed successfully | service=InfoQuest | status=success | response_sample={response_sample}")
+
+        return response_json
+
+    def image_search(
+        self,
+        query: str,
+        site: str = "",
+        output_format: str = "JSON",
+    ) -> str:
+        if logger.isEnabledFor(logging.DEBUG):
+            query_truncated = query[:50] + "..." if len(query) > 50 else query
+            logger.debug(
+                f"InfoQuest - Image Search API request initiated | "
+                f"operation=search images | "
+                f"query_truncated={query_truncated} | "
+                f"has_site_filter={bool(site)} | site={site} | "
+                f"image_search_time_range={self.image_search_time_range if self.image_search_time_range >= 1 and self.image_search_time_range <= 365 else 'default'} | "
+                f"image_size={self.image_size} |"
+                f"request_type=sync"
+            )
+
+        try:
+            logger.info("InfoQuest Image Search - Executing search with parameters")
+            raw_results = self.image_search_raw_results(
+                query,
+                site,
+                output_format,
+            )
+
+            if "search_result" in raw_results:
+                logger.debug("InfoQuest Image Search - Successfully extracted search_result from JSON response")
+                results = raw_results["search_result"]
+
+                logger.debug(f"InfoQuest Image Search - Processing raw image search results: {results}")
+                cleaned_results = self.clean_results_with_image_search(results["results"])
+
+                result_json = json.dumps(cleaned_results, indent=2, ensure_ascii=False)
+
+                logger.debug(f"InfoQuest Image Search - Image search tool execution completed | mode=synchronous | results_count={len(cleaned_results)}")
+                return result_json
+
+            elif "content" in raw_results:
+                # Fallback to content field if search_result is not available
+                error_message = "image search API return wrong format"
+                logger.error("image search API return wrong format, no search_result nor content field found in JSON response, content: %s", raw_results["content"])
+                return f"Error: {error_message}"
+            else:
+                # If neither field exists, return the original response
+                logger.warning("InfoQuest Image Search - Neither search_result nor content field found in JSON response")
+                return json.dumps(raw_results, indent=2, ensure_ascii=False)
+
+        except Exception as e:
+            error_message = f"InfoQuest Image Search - Image search tool execution failed | mode=synchronous | error={str(e)}"
+            logger.error(error_message)
+            return f"Error: {error_message}"
diff --git a/backend/packages/harness/deerflow/community/infoquest/tools.py b/backend/packages/harness/deerflow/community/infoquest/tools.py
index bf1d77e..d05b5a8 100644
--- a/backend/packages/harness/deerflow/community/infoquest/tools.py
+++ b/backend/packages/harness/deerflow/community/infoquest/tools.py
@@ -13,6 +13,7 @@ def _get_infoquest_client() -> InfoQuestClient:
     search_time_range = -1
     if search_config is not None and "search_time_range" in search_config.model_extra:
         search_time_range = search_config.model_extra.get("search_time_range")
+        
     fetch_config = get_app_config().get_tool_config("web_fetch")
     fetch_time = -1
     if fetch_config is not None and "fetch_time" in fetch_config.model_extra:
@@ -23,12 +24,24 @@ def _get_infoquest_client() -> InfoQuestClient:
     navigation_timeout = -1
     if fetch_config is not None and "navigation_timeout" in fetch_config.model_extra:
         navigation_timeout = fetch_config.model_extra.get("navigation_timeout")
+        
+    image_search_config = get_app_config().get_tool_config("image_search")
+    image_search_time_range = -1
+    if image_search_config is not None and "image_search_time_range" in image_search_config.model_extra:
+        image_search_time_range = image_search_config.model_extra.get("image_search_time_range")
+    image_size = "i"
+    if image_search_config is not None and "image_size" in image_search_config.model_extra:
+        image_size = image_search_config.model_extra.get("image_size")
+    
+    
 
     return InfoQuestClient(
         search_time_range=search_time_range,
         fetch_timeout=fetch_timeout,
         fetch_navigation_timeout=navigation_timeout,
         fetch_time=fetch_time,
+        image_search_time_range=image_search_time_range,
+        image_size=image_size,
     )
 
 
@@ -61,3 +74,22 @@ def web_fetch_tool(url: str) -> str:
         return result
     article = readability_extractor.extract_article(result)
     return article.to_markdown()[:4096]
+
+
+@tool("image_search", parse_docstring=True)
+def image_search_tool(query: str) -> str:
+    """Search for images online. Use this tool BEFORE image generation to find reference images for characters, portraits, objects, scenes, or any content requiring visual accuracy.
+
+    **When to use:**
+    - Before generating character/portrait images: search for similar poses, expressions, styles
+    - Before generating specific objects/products: search for accurate visual references
+    - Before generating scenes/locations: search for architectural or environmental references
+    - Before generating fashion/clothing: search for style and detail references
+
+    The returned image URLs can be used as reference images in image generation to significantly improve quality.
+
+    Args:
+        query: The query to search for images.
+    """
+    client = _get_infoquest_client()
+    return client.image_search(query)
diff --git a/backend/tests/test_infoquest_client.py b/backend/tests/test_infoquest_client.py
index 190444d..b5f09a2 100644
--- a/backend/tests/test_infoquest_client.py
+++ b/backend/tests/test_infoquest_client.py
@@ -123,16 +123,6 @@ class TestInfoQuestClient:
         assert cleaned[1]["type"] == "news"
         assert cleaned[1]["title"] == "Test News"
 
-    def test_clean_results_with_image_search(self):
-        """Test clean_results_with_image_search method with sample raw results."""
-        raw_results = [{"content": {"results": {"images_results": [{"image_url": "https://example.com/image1.jpg", "thumbnail_url": "https://example.com/thumb1.jpg", "url": "https://example.com/page1"}]}}}]
-        cleaned = InfoQuestClient.clean_results_with_image_search(raw_results)
-
-        assert len(cleaned) == 1
-        assert cleaned[0]["image_url"] == "https://example.com/image1.jpg"
-        assert cleaned[0]["thumbnail_url"] == "https://example.com/thumb1.jpg"
-        assert cleaned[0]["url"] == "https://example.com/page1"
-
     @patch("deerflow.community.infoquest.tools._get_infoquest_client")
     def test_web_search_tool(self, mock_get_client):
         """Test web_search_tool function."""
@@ -163,7 +153,12 @@ class TestInfoQuestClient:
     def test_get_infoquest_client(self, mock_get_app_config):
         """Test _get_infoquest_client function with config."""
         mock_config = MagicMock()
-        mock_config.get_tool_config.side_effect = [MagicMock(model_extra={"search_time_range": 24}), MagicMock(model_extra={"fetch_time": 10, "timeout": 30, "navigation_timeout": 60})]
+        # Add image_search config to the side_effect
+        mock_config.get_tool_config.side_effect = [
+            MagicMock(model_extra={"search_time_range": 24}),  # web_search config
+            MagicMock(model_extra={"fetch_time": 10, "timeout": 30, "navigation_timeout": 60}),  # web_fetch config
+            MagicMock(model_extra={"image_search_time_range": 7, "image_size": "l"})  # image_search config
+        ]
         mock_get_app_config.return_value = mock_config
 
         client = tools._get_infoquest_client()
@@ -172,6 +167,8 @@ class TestInfoQuestClient:
         assert client.fetch_time == 10
         assert client.fetch_timeout == 30
         assert client.fetch_navigation_timeout == 60
+        assert client.image_search_time_range == 7
+        assert client.image_size == "l"
 
     @patch("deerflow.community.infoquest.infoquest_client.requests.post")
     def test_web_search_api_error(self, mock_post):
@@ -182,3 +179,170 @@ class TestInfoQuestClient:
         result = client.web_search("test query")
 
         assert "Error" in result
+
+    def test_clean_results_with_image_search(self):
+        """Test clean_results_with_image_search method with sample raw results."""
+        raw_results = [{"content": {"results": {"images_results": [{"original": "https://example.com/image1.jpg", "title": "Test Image 1", "url": "https://example.com/page1"}]}}}]
+        cleaned = InfoQuestClient.clean_results_with_image_search(raw_results)
+
+        assert len(cleaned) == 1
+        assert cleaned[0]["image_url"] == "https://example.com/image1.jpg"
+        assert cleaned[0]["title"] == "Test Image 1"
+
+    def test_clean_results_with_image_search_empty(self):
+        """Test clean_results_with_image_search method with empty results."""
+        raw_results = [{"content": {"results": {"images_results": []}}}]
+        cleaned = InfoQuestClient.clean_results_with_image_search(raw_results)
+
+        assert len(cleaned) == 0
+
+    def test_clean_results_with_image_search_no_images(self):
+        """Test clean_results_with_image_search method with no images_results field."""
+        raw_results = [{"content": {"results": {"organic": [{"title": "Test Page"}]}}}]
+        cleaned = InfoQuestClient.clean_results_with_image_search(raw_results)
+
+        assert len(cleaned) == 0
+
+
+class TestImageSearch:
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_raw_results_success(self, mock_post):
+        """Test successful image_search_raw_results operation."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"search_result": {"results": [{"content": {"results": {"images_results": [{"original": "https://example.com/image1.jpg", "title": "Test Image", "url": "https://example.com/page1"}]}}}]}}
+        mock_post.return_value = mock_response
+
+        client = InfoQuestClient()
+        result = client.image_search_raw_results("test query")
+
+        assert "search_result" in result
+        mock_post.assert_called_once()
+        args, kwargs = mock_post.call_args
+        assert args[0] == "https://search.infoquest.bytepluses.com"
+        assert kwargs["json"]["query"] == "test query"
+
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_raw_results_with_parameters(self, mock_post):
+        """Test image_search_raw_results with all parameters."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.json.return_value = {"search_result": {"results": [{"content": {"results": {"images_results": [{"original": "https://example.com/image1.jpg"}]}}}]}}
+        mock_post.return_value = mock_response
+
+        client = InfoQuestClient(image_search_time_range=30, image_size="l")
+        client.image_search_raw_results(query="cat", site="unsplash.com", output_format="JSON")
+
+        mock_post.assert_called_once()
+        args, kwargs = mock_post.call_args
+        assert kwargs["json"]["query"] == "cat"
+        assert kwargs["json"]["time_range"] == 30
+        assert kwargs["json"]["site"] == "unsplash.com"
+        assert kwargs["json"]["image_size"] == "l"
+        assert kwargs["json"]["format"] == "JSON"
+
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_raw_results_invalid_time_range(self, mock_post):
+        """Test image_search_raw_results with invalid time_range parameter."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+
+        mock_response.json.return_value = {"search_result": {"results": [{"content": {"results": {"images_results": []}}}]}}
+        mock_post.return_value = mock_response
+
+        # Create client with invalid time_range (should be ignored)
+        client = InfoQuestClient(image_search_time_range=400, image_size="x")
+        client.image_search_raw_results(
+            query="test",
+            site="",
+        )
+
+        mock_post.assert_called_once()
+        args, kwargs = mock_post.call_args
+        assert kwargs["json"]["query"] == "test"
+        assert "time_range" not in kwargs["json"]
+        assert "image_size" not in kwargs["json"]
+
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_success(self, mock_post):
+        """Test successful image_search operation."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+
+        mock_response.json.return_value = {"search_result": {"results": [{"content": {"results": {"images_results": [{"original": "https://example.com/image1.jpg", "title": "Test Image", "url": "https://example.com/page1"}]}}}]}}
+        mock_post.return_value = mock_response
+
+        client = InfoQuestClient()
+        result = client.image_search("cat")
+
+        # Check if result is a valid JSON string with expected content
+        result_data = json.loads(result)
+
+        assert len(result_data) == 1
+
+        assert result_data[0]["image_url"] == "https://example.com/image1.jpg"
+
+        assert result_data[0]["title"] == "Test Image"
+
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_with_all_parameters(self, mock_post):
+        """Test image_search with all optional parameters."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+
+        mock_response.json.return_value = {"search_result": {"results": [{"content": {"results": {"images_results": [{"original": "https://example.com/image1.jpg"}]}}}]}}
+        mock_post.return_value = mock_response
+
+        # Create client with image search parameters
+        client = InfoQuestClient(image_search_time_range=7, image_size="m")
+        client.image_search(query="dog", site="flickr.com", output_format="JSON")
+
+        mock_post.assert_called_once()
+        args, kwargs = mock_post.call_args
+        assert kwargs["json"]["query"] == "dog"
+        assert kwargs["json"]["time_range"] == 7
+        assert kwargs["json"]["site"] == "flickr.com"
+        assert kwargs["json"]["image_size"] == "m"
+
+    @patch("deerflow.community.infoquest.infoquest_client.requests.post")
+    def test_image_search_api_error(self, mock_post):
+        """Test image_search operation with API error."""
+        mock_post.side_effect = Exception("Connection error")
+
+        client = InfoQuestClient()
+        result = client.image_search("test query")
+
+        assert "Error" in result
+
+    @patch("deerflow.community.infoquest.tools._get_infoquest_client")
+    def test_image_search_tool(self, mock_get_client):
+        """Test image_search_tool function."""
+        mock_client = MagicMock()
+        mock_client.image_search.return_value = json.dumps([{"image_url": "https://example.com/image1.jpg"}])
+        mock_get_client.return_value = mock_client
+
+        result = tools.image_search_tool.run({"query": "test query"})
+
+        # Check if result is a valid JSON string
+        result_data = json.loads(result)
+        assert len(result_data) == 1
+        assert result_data[0]["image_url"] == "https://example.com/image1.jpg"
+        mock_get_client.assert_called_once()
+        mock_client.image_search.assert_called_once_with("test query")
+
+    # In /Users/bytedance/python/deer-flowv2/deer-flow/backend/tests/test_infoquest_client.py
+
+    @patch("deerflow.community.infoquest.tools._get_infoquest_client")
+    def test_image_search_tool_with_parameters(self, mock_get_client):
+        """Test image_search_tool function with all parameters (extra parameters will be ignored)."""
+        mock_client = MagicMock()
+        mock_client.image_search.return_value = json.dumps([{"image_url": "https://example.com/image1.jpg"}])
+        mock_get_client.return_value = mock_client
+
+        # Pass all parameters as a dictionary (extra parameters will be ignored)
+        tools.image_search_tool.run({"query": "sunset", "time_range": 30, "site": "unsplash.com", "image_size": "l"})
+
+        mock_get_client.assert_called_once()
+        # image_search_tool only passes query to client.image_search
+        # site parameter is empty string by default
+        mock_client.image_search.assert_called_once_with("sunset")
diff --git a/config.example.yaml b/config.example.yaml
index 0d79cf7..44ebb0d 100644
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -181,7 +181,7 @@ tools:
     max_results: 5
     # api_key: $TAVILY_API_KEY  # Set if needed
 
-  # Web search tool (requires InfoQuest API key)
+  # Web search tool (uses InfoQuest, requires InfoQuest API key)
   # - name: web_search
   #   group: web
   #   use: deerflow.community.infoquest.tools:web_search_tool
@@ -194,7 +194,7 @@ tools:
     use: deerflow.community.jina_ai.tools:web_fetch_tool
     timeout: 10
 
-  # Web fetch tool (uses InfoQuest AI reader)
+  # Web fetch tool (uses InfoQuest)
   # - name: web_fetch
   #   group: web
   #   use: deerflow.community.infoquest.tools:web_fetch_tool
@@ -212,6 +212,15 @@ tools:
     use: deerflow.community.image_search.tools:image_search_tool
     max_results: 5
 
+  # Image search tool (uses InfoQuest)
+  # - name: image_search
+  #   group: web
+  #   use: deerflow.community.infoquest.tools:image_search_tool
+  #   # Used to limit the scope of image search results, only returns content within the specified time range. Set to -1 to disable time filtering
+  #   image_search_time_range: 10
+  #   # Image size filter. Options: "l" (large), "m" (medium), "i" (icon).
+  #   image_size: "i"
+
   # File operations tools
   - name: ls
     group: file:read