diff --git a/frontend/src/lang/zh.js b/frontend/src/lang/zh.js
index c77ba63b14..e965d70523 100644
--- a/frontend/src/lang/zh.js
+++ b/frontend/src/lang/zh.js
@@ -637,7 +637,8 @@ export default {
     line_symbol_none: '无',
     pie_inner_radius: '内径',
     pie_outer_radius: '外径',
-    funnel_width: '宽度'
+    funnel_width: '宽度',
+    line_smooth: '平滑折线'
   },
   dataset: {
     datalist: '数据集',
diff --git a/frontend/src/views/chart/chart/chart.js b/frontend/src/views/chart/chart/chart.js
index b71fc5d14f..be877f189d 100644
--- a/frontend/src/views/chart/chart/chart.js
+++ b/frontend/src/views/chart/chart/chart.js
@@ -11,6 +11,7 @@ export const DEFAULT_SIZE = {
   lineType: 'solid',
   lineSymbol: 'emptyCircle',
   lineSymbolSize: 4,
+  lineSmooth: false,
   pieInnerRadius: 0,
   pieOuterRadius: 60,
   funnelWidth: 80
diff --git a/frontend/src/views/chart/chart/line/line.js b/frontend/src/views/chart/chart/line/line.js
index 91fa2210b5..0ddc7635d4 100644
--- a/frontend/src/views/chart/chart/line/line.js
+++ b/frontend/src/views/chart/chart/line/line.js
@@ -27,6 +27,7 @@ export function baseLineOption(chart_option, chart) {
           width: customAttr.size.lineWidth,
           type: customAttr.size.lineType
         }
+        y.smooth = customAttr.size.lineSmooth
       }
       y.type = 'line'
       chart_option.legend.data.push(y.name)
diff --git a/frontend/src/views/chart/components/shape_attr/SizeSelector.vue b/frontend/src/views/chart/components/shape_attr/SizeSelector.vue
index 48772311bb..9150c9ee7e 100644
--- a/frontend/src/views/chart/components/shape_attr/SizeSelector.vue
+++ b/frontend/src/views/chart/components/shape_attr/SizeSelector.vue
@@ -42,6 +42,9 @@
             <el-form-item :label="$t('chart.line_symbol_size')" class="form-item form-item-slider">
               <el-slider v-model="sizeForm.lineSymbolSize" show-input :show-input-controls="false" input-size="mini" :min="0" :max="20" @change="changeBarSizeCase" />
             </el-form-item>
+            <el-form-item :label="$t('chart.line_smooth')" class="form-item">
+              <el-checkbox v-model="sizeForm.lineSmooth" @change="changeBarSizeCase">{{ $t('chart.line_smooth') }}</el-checkbox>
+            </el-form-item>
           </el-form>
 
           <el-form v-if="chart.type && chart.type.includes('pie')" ref="sizeFormPie" :model="sizeForm" label-width="80px" size="mini">