diff --git a/src/views/GroupEvolution/groupMember/components/groupPanel.vue b/src/views/GroupEvolution/groupMember/components/groupPanel.vue
index 9cb06d4..7acf1df 100644
--- a/src/views/GroupEvolution/groupMember/components/groupPanel.vue
+++ b/src/views/GroupEvolution/groupMember/components/groupPanel.vue
@@ -87,7 +87,7 @@ const updateCharts = (groupList) => {
         const allEqual = group.value.every(item => item === firstElement);
         let maxValue = 0;
         if(allEqual){
-          maxValue = firstElement + 20;
+          maxValue = Number(firstElement) + 40;
         }else{
           maxValue = Math.ceil(Math.max(...group.value));
         }