diff --git a/src/app/admin/gas-class-group/gas-class-group-task/gas-class-group-task.component.ts b/src/app/admin/gas-class-group/gas-class-group-task/gas-class-group-task.component.ts
index 5e552dd..2cea44e 100644
--- a/src/app/admin/gas-class-group/gas-class-group-task/gas-class-group-task.component.ts
+++ b/src/app/admin/gas-class-group/gas-class-group-task/gas-class-group-task.component.ts
@@ -85,17 +85,19 @@ export class GasClassGroupTaskComponent implements OnInit {
    * 请求数据
    */
   requestData(pageNum) {
-    this.tableLoading = true;
-    this.whereObject['pageNum'] = pageNum;
-    this.whereObject['pageSize'] = 10;
-    this.gasClassGroupTaskService.getClassGroupTaskList(this.whereObject, data => {
-      if (data['return_code'] === '000000') {
-        this.dataObject = data['return_data'];
-      } else {
-        this.modal.error(data['return_msg']);
-      }
-      this.tableLoading = false;
-    });
+    if (pageNum != null) {
+      this.tableLoading = true;
+      this.whereObject['pageNum'] = pageNum;
+      this.whereObject['pageSize'] = 10;
+      this.gasClassGroupTaskService.getClassGroupTaskList(this.whereObject, data => {
+        if (data['return_code'] === '000000') {
+          this.dataObject = data['return_data'];
+        } else {
+          this.modal.error(data['return_msg']);
+        }
+        this.tableLoading = false;
+      });
+    }
   }
 
   /**