diff --git a/internal/runtime/executor/gemini_web_executor.go b/internal/runtime/executor/gemini_web_executor.go
index a6cab1e91..bb43850b0 100644
--- a/internal/runtime/executor/gemini_web_executor.go
+++ b/internal/runtime/executor/gemini_web_executor.go
@@ -95,13 +95,13 @@ func (e *GeminiWebExecutor) ExecuteStream(ctx context.Context, auth *cliproxyaut
 			defer mutex.Unlock()
 		}
 		for _, line := range lines {
-			lines := sdktranslator.TranslateStream(ctx, to, from, req.Model, bytes.Clone(opts.OriginalRequest), req.Payload, bytes.Clone([]byte(line)), &param)
+			lines = sdktranslator.TranslateStream(ctx, to, from, req.Model, bytes.Clone(opts.OriginalRequest), req.Payload, bytes.Clone([]byte(line)), &param)
 			for _, l := range lines {
 				out <- cliproxyexecutor.StreamChunk{Payload: []byte(l)}
 			}
 		}
 		for _, line := range done {
-			lines := sdktranslator.TranslateStream(ctx, to, from, req.Model, bytes.Clone(opts.OriginalRequest), req.Payload, bytes.Clone([]byte(line)), &param)
+			lines = sdktranslator.TranslateStream(ctx, to, from, req.Model, bytes.Clone(opts.OriginalRequest), req.Payload, bytes.Clone([]byte(line)), &param)
 			for _, l := range lines {
 				out <- cliproxyexecutor.StreamChunk{Payload: []byte(l)}
 			}
diff --git a/internal/translator/gemini/openai/chat-completions/gemini_openai_response.go b/internal/translator/gemini/openai/chat-completions/gemini_openai_response.go
index f7c23b782..ab6cc19e1 100644
--- a/internal/translator/gemini/openai/chat-completions/gemini_openai_response.go
+++ b/internal/translator/gemini/openai/chat-completions/gemini_openai_response.go
@@ -42,6 +42,10 @@ func ConvertGeminiResponseToOpenAI(_ context.Context, _ string, originalRequestR
 		}
 	}
 
+	if bytes.HasPrefix(rawJSON, []byte("data:")) {
+		rawJSON = bytes.TrimSpace(rawJSON[5:])
+	}
+
 	if bytes.Equal(rawJSON, []byte("[DONE]")) {
 		return []string{}
 	}