diff --git a/app/src/main/java/com/kunfei/bookshelf/widget/recycler/expandable/bean/GroupItem.java b/app/src/main/java/com/kunfei/bookshelf/widget/recycler/expandable/bean/GroupItem.java
index 81ab60b5ba..d15f72c35d 100644
--- a/app/src/main/java/com/kunfei/bookshelf/widget/recycler/expandable/bean/GroupItem.java
+++ b/app/src/main/java/com/kunfei/bookshelf/widget/recycler/expandable/bean/GroupItem.java
@@ -63,7 +63,10 @@ public void setChildDatas(List<S> childDatas) {
     }
 
     public void removeChild(int childPosition) {
-
+        if (childDatas == null || childDatas.size() == 0) {
+            return;
+        }
+        childDatas.remove(childPosition);
     }
 
     public T getGroupData() {