diff --git a/lib/ai/providers/huanke-gemini.ts b/lib/ai/providers/huanke-gemini.ts
index f743fffbd..5696a6834 100644
--- a/lib/ai/providers/huanke-gemini.ts
+++ b/lib/ai/providers/huanke-gemini.ts
@@ -443,6 +443,35 @@ async function sendHuankeGeminiRequest(
             }
           });
           console.log("[Huanke Gemini] Added image URL:", imageUrl.substring(0, 100));
+        } else if (contentPart.type === "file" && (contentPart.data || contentPart.url)) {
+          // 🆕 处理 file 类型（从 Chat API 传过来的格式）
+          // 格式: { type: "file", mediaType: "image/jpeg", data: "https://..." }
+          let imageUrl = contentPart.data || contentPart.url;
+          const mimeType = contentPart.mediaType || contentPart.mimeType || "image/jpeg";
+          
+          console.log("[Huanke Gemini] Processing file type:", { url: imageUrl?.substring(0, 80), mimeType });
+          
+          if (imageUrl && imageUrl.startsWith("data:")) {
+            // Base64 图片 -> 上传到 S3 获取 URL
+            console.log("[Huanke Gemini] Converting Base64 file to URL (Base64 forbidden)...");
+            try {
+              imageUrl = await convertBase64ToUrl(imageUrl);
+            } catch (error) {
+              console.error("[Huanke Gemini] Failed to convert Base64 to URL:", error);
+              continue;
+            }
+          }
+          
+          if (imageUrl && imageUrl.startsWith("http")) {
+            // 使用 fileData 格式传递图片 URL
+            parts.push({
+              fileData: {
+                fileUri: imageUrl,
+                mimeType: mimeType.startsWith("image/") ? mimeType : "image/jpeg",
+              }
+            });
+            console.log("[Huanke Gemini] Added file image URL:", imageUrl.substring(0, 100));
+          }
         }
       }
     }