diff --git a/src/renderer/src/providers/AiProvider/GeminiProvider.ts b/src/renderer/src/providers/AiProvider/GeminiProvider.ts
index af1adb375e..1d69285f10 100644
--- a/src/renderer/src/providers/AiProvider/GeminiProvider.ts
+++ b/src/renderer/src/providers/AiProvider/GeminiProvider.ts
@@ -291,8 +291,7 @@ export default class GeminiProvider extends BaseProvider {
       if (reasoningEffort === undefined) {
         return {
           thinkingConfig: {
-            includeThoughts: false,
-            thinkingBudget: 0
+            includeThoughts: false
           } as ThinkingConfig
         }
       }
@@ -308,11 +307,11 @@ export default class GeminiProvider extends BaseProvider {
       }
 
       const { max } = findTokenLimit(model.id) || { max: 0 }
+      const budget = Math.floor(max * effortRatio)
 
-      // 如果thinking_budget是明确设置的值（包括0），使用该值
       return {
         thinkingConfig: {
-          thinkingBudget: Math.floor(max * effortRatio),
+          ...(budget > 0 ? { thinkingBudget: budget } : {}),
           includeThoughts: true
         } as ThinkingConfig
       }