diff --git a/src/main/java/com/ai/da/service/impl/GenerateServiceImpl.java b/src/main/java/com/ai/da/service/impl/GenerateServiceImpl.java
index d9983f4e..f824032f 100644
--- a/src/main/java/com/ai/da/service/impl/GenerateServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/GenerateServiceImpl.java
@@ -721,8 +721,12 @@ public class GenerateServiceImpl extends ServiceImpl<GenerateMapper, Generate> i
         // 创建生成任务
         List<String> taskIds = createGenerationTasks(generateDTO, config.times);
 
-        // 处理积分扣除（使用第一个任务的UUID前缀）
-        processCreditDeduction(generateDTO.getUserId(), taskIds.get(0).split("-")[0], config.creditsEvent);
+        // 截取任务id
+        String original = taskIds.get(0);
+        String taskId = original.substring(0, original.lastIndexOf("-", original.lastIndexOf("-") - 1));
+
+        // 处理积分扣除
+        processCreditDeduction(generateDTO.getUserId(), taskId, config.creditsEvent);
 
         return new PrepareForGenerateVO(taskIds, 200);
     }