diff --git a/frontend/src/views/chart/components/shape-attr/SizeSelector.vue b/frontend/src/views/chart/components/shape-attr/SizeSelector.vue
index 3a9c20a990..05180d7227 100644
--- a/frontend/src/views/chart/components/shape-attr/SizeSelector.vue
+++ b/frontend/src/views/chart/components/shape-attr/SizeSelector.vue
@@ -142,7 +142,7 @@
           </el-select>
         </el-form-item>
         <el-form-item v-show="chart.type" :label="$t('chart.space_split')" class="form-item">
-          <el-input-number v-model="sizeForm.spaceSplit" size="mini" @change="changeBarSizeCase" />
+          <el-input-number v-model="sizeForm.spaceSplit" min="0" size="mini" @change="changeBarSizeCase" />
         </el-form-item>
       </el-form>
 
diff --git a/frontend/src/views/chart/components/shape-attr/SizeSelectorAntV.vue b/frontend/src/views/chart/components/shape-attr/SizeSelectorAntV.vue
index a911e7ea4d..7b1d2c576c 100644
--- a/frontend/src/views/chart/components/shape-attr/SizeSelectorAntV.vue
+++ b/frontend/src/views/chart/components/shape-attr/SizeSelectorAntV.vue
@@ -168,7 +168,7 @@
           </el-select>
         </el-form-item>
         <el-form-item v-show="chart.type" :label="$t('chart.space_split')" class="form-item">
-          <el-input-number v-model="sizeForm.spaceSplit" size="mini" @change="changeBarSizeCase" />
+          <el-input-number v-model="sizeForm.spaceSplit" min="0" size="mini" @change="changeBarSizeCase" />
         </el-form-item>
       </el-form>