diff --git a/nezha-fronted/src/components/charts/chartDataFormat.js b/nezha-fronted/src/components/charts/chartDataFormat.js
index 44a9481d4..be303573d 100644
--- a/nezha-fronted/src/components/charts/chartDataFormat.js
+++ b/nezha-fronted/src/components/charts/chartDataFormat.js
@@ -323,6 +323,9 @@ function days(value,index,type=1,dot){
 * dot：保留的小数位，
 * */
 function asciiCompute(num,ascii,units,dot=2){
+  if(!num && num!==0 && num!=='0'){
+    return ''
+  }
   num=Number(num)
   let carry=0;
   if(num > 1){
diff --git a/nezha-fronted/src/components/charts/line-chart-block.vue b/nezha-fronted/src/components/charts/line-chart-block.vue
index d60646d57..705a2edcc 100644
--- a/nezha-fronted/src/components/charts/line-chart-block.vue
+++ b/nezha-fronted/src/components/charts/line-chart-block.vue
@@ -619,7 +619,7 @@
                     + [t_date.getHours(), t_date.getMinutes(),t_date.getSeconds()].join(':');
                   str +=`<br/>`;
                 }
-                let val = parseFloat(Number(item.data[1]).toFixed(2));
+                let val =item.data[1]?parseFloat(Number(item.data[1]).toFixed(2)):'';
                 if(val===0){
                   val = Number(item.data[1]);
                 }