diff --git a/inside-notices/src/main/java/cn/axzo/msg/center/utils/BatchController.java b/inside-notices/src/main/java/cn/axzo/msg/center/utils/BatchController.java
index 8757492e..fe991e92 100644
--- a/inside-notices/src/main/java/cn/axzo/msg/center/utils/BatchController.java
+++ b/inside-notices/src/main/java/cn/axzo/msg/center/utils/BatchController.java
@@ -22,7 +22,7 @@ public class BatchController {
 
     public BatchController(String operation, Object request,
                            ExecutorService executor) {
-        this(operation, request, executor, 4);
+        this(operation, request, executor, 2);
     }
 
     public BatchController(String operation, Object request,