diff --git a/maubot_llmplus/thrid_platform.py b/maubot_llmplus/thrid_platform.py
index f51589c..68a0653 100644
--- a/maubot_llmplus/thrid_platform.py
+++ b/maubot_llmplus/thrid_platform.py
@@ -39,6 +39,37 @@ async def _read_openai_sse(response):
             pass
 
 
+async def _read_gemini_sse(response):
+    """读取 Gemini SSE 流（?alt=sse 格式），yield 每个 text chunk。
+    Gemini 无 [DONE] 哨兵，通过 finishReason 字段判断结束。"""
+    while True:
+        try:
+            line_bytes = await asyncio.wait_for(response.content.readline(), timeout=60.0)
+        except asyncio.TimeoutError:
+            break
+        if not line_bytes:
+            break
+        line = line_bytes.decode("utf-8").strip()
+        if not line.startswith("data: "):
+            continue
+        data_str = line[6:]
+        try:
+            data = json.loads(data_str)
+            candidates = data.get("candidates", [])
+            if candidates:
+                candidate = candidates[0]
+                parts = candidate.get("content", {}).get("parts", [])
+                for part in parts:
+                    text = part.get("text", "")
+                    if text:
+                        yield text
+                # finishReason 存在表示流已结束，主动退出（等价于 [DONE]）
+                if candidate.get("finishReason"):
+                    break
+        except json.JSONDecodeError:
+            pass
+
+
 class Deepseek(Platform):
 
     def __init__(self, config: BaseProxyConfig, http: ClientSession):
@@ -385,28 +416,8 @@ class Gemini(Platform):
         async with self.http.post(endpoint, headers=headers, data=json.dumps(request_body)) as response:
             if response.status != 200:
                 raise ValueError(f"Error: {await response.text()}")
-            while True:
-                try:
-                    line_bytes = await asyncio.wait_for(response.content.readline(), timeout=60.0)
-                except asyncio.TimeoutError:
-                    break
-                if not line_bytes:
-                    break
-                line = line_bytes.decode("utf-8").strip()
-                if not line.startswith("data: "):
-                    continue
-                data_str = line[6:]
-                try:
-                    data = json.loads(data_str)
-                    candidates = data.get("candidates", [])
-                    if candidates:
-                        parts = candidates[0].get("content", {}).get("parts", [])
-                        for part in parts:
-                            text = part.get("text", "")
-                            if text:
-                                yield text
-                except json.JSONDecodeError:
-                    pass
+            async for chunk in _read_gemini_sse(response):
+                yield chunk
 
     async def list_models(self) -> List[str]:
         full_url = f"{self.url}/v1beta/models"