diff --git a/im-center-server/src/main/java/cn/axzo/im/controller/PrivateController.java b/im-center-server/src/main/java/cn/axzo/im/controller/PrivateController.java
index 9d4f651..8a65569 100644
--- a/im-center-server/src/main/java/cn/axzo/im/controller/PrivateController.java
+++ b/im-center-server/src/main/java/cn/axzo/im/controller/PrivateController.java
@@ -83,8 +83,8 @@ public class PrivateController {
     }
 
     @PostMapping("/private/message/expungeTask")
-    public Object expungeTask() {
-        int count = expungeImTaskJob.runWithDefault();
+    public Object expungeTask(@RequestBody(required = false) ExpungeImTaskJob.Param param) {
+        int count = expungeImTaskJob.expunge(param);
         return CommonResponse.success(count);
     }
 }
\ No newline at end of file
diff --git a/im-center-server/src/main/java/cn/axzo/im/job/ExpungeImTaskJob.java b/im-center-server/src/main/java/cn/axzo/im/job/ExpungeImTaskJob.java
index ace8d01..d201266 100644
--- a/im-center-server/src/main/java/cn/axzo/im/job/ExpungeImTaskJob.java
+++ b/im-center-server/src/main/java/cn/axzo/im/job/ExpungeImTaskJob.java
@@ -29,7 +29,7 @@ public class ExpungeImTaskJob extends IJobHandler {
         log.info("start - run job with param={}", paramStr);
         try {
             Param param = JSONObjectUtil.parseObject(paramStr, Param.class);
-            executeImpl(param);
+            expunge(param);
             log.info("end - run job with param={}", param);
             return ReturnT.SUCCESS;
         } catch (Exception e) {
@@ -38,11 +38,8 @@ public class ExpungeImTaskJob extends IJobHandler {
         }
     }
 
-    public int runWithDefault() {
-        return executeImpl(new Param());
-    }
-
-    private int executeImpl(Param param) {
+    public int expunge(Param nullableParam) {
+        Param param = nullableParam == null ? new Param() : nullableParam;
         Date until = DateTime.now().minusDays(param.daysAgo).toDate();
         int count = messageTaskMapper.expunge(until);
         log.info("deleted count={}", count);