diff --git a/core/core-frontend/src/views/chart/components/editor/editor-style/components/LabelSelector.vue b/core/core-frontend/src/views/chart/components/editor/editor-style/components/LabelSelector.vue
index 73b0962a27..745277cf5b 100644
--- a/core/core-frontend/src/views/chart/components/editor/editor-style/components/LabelSelector.vue
+++ b/core/core-frontend/src/views/chart/components/editor/editor-style/components/LabelSelector.vue
@@ -1267,6 +1267,7 @@ const conversionPrecision = [
     >
       <el-checkbox
         :effect="themes"
+        size="small"
         @change="changeLabelAttr('conversionTag')"
         v-model="state.labelForm.conversionTag.show"
       >