diff --git a/nezha-fronted/src/components/chart/chart/legend.vue b/nezha-fronted/src/components/chart/chart/legend.vue
index cfb4dff47..5f87d3ae6 100644
--- a/nezha-fronted/src/components/chart/chart/legend.vue
+++ b/nezha-fronted/src/components/chart/chart/legend.vue
@@ -216,7 +216,7 @@ export default {
     getMaxValue (dataArg, chartInfo) {
       let maxValue = 0
       let minValue = 0
-      if (chartInfo.unit && dataArg.length > 0) {
+      if (dataArg.length > 0) {
         maxValue = 0
         minValue = 0
         for (let j = 0; j < dataArg.length; j++) {
diff --git a/nezha-fronted/src/components/common/bottomBox/tabs/alertMessageTabNew.vue b/nezha-fronted/src/components/common/bottomBox/tabs/alertMessageTabNew.vue
index 0edfa4fb6..d0b71ba7a 100644
--- a/nezha-fronted/src/components/common/bottomBox/tabs/alertMessageTabNew.vue
+++ b/nezha-fronted/src/components/common/bottomBox/tabs/alertMessageTabNew.vue
@@ -621,7 +621,7 @@ export default {
         }
         chartInfo.elements[0].expression = this.currentMsg.alertRule.expr.replace(/\"/g, '\'').replace(/\r|\n+/g, '')
         chartInfo.elements[0].filter = encodeURIComponent(decodeURIComponent(this.promQueryParamLabels(this.currentMsg.labels)))
-        chartInfo.unit = this.currentMsg.unit
+        chartInfo.unit = this.currentMsg.alertRule.unit
         this.showFullscreen(true, chartInfo)
       } else if (this.currentMsg.alertRule.type === 2) {
         const chartInfo = lodash.cloneDeep(logData)
@@ -635,7 +635,7 @@ export default {
         }
         chartInfo.elements[0].expression = encodeURIComponent(this.currentMsg.alertRule.expr.replace(/\"/g, '\'').replace(/\r|\n+/g, ''))
         chartInfo.elements[0].filter = encodeURIComponent(decodeURIComponent(this.promQueryParamLabels(this.currentMsg.labels)))
-        chartInfo.unit = this.currentMsg.unit
+        chartInfo.unit = this.currentMsg.alertRule.unit
         this.showFullscreen(true, chartInfo)
       }
     },
diff --git a/nezha-fronted/src/components/page/alert/alertMessage.vue b/nezha-fronted/src/components/page/alert/alertMessage.vue
index 0793ceee0..989cfda62 100644
--- a/nezha-fronted/src/components/page/alert/alertMessage.vue
+++ b/nezha-fronted/src/components/page/alert/alertMessage.vue
@@ -595,7 +595,8 @@ export default {
         }
         chartInfo.elements[0].expression = this.currentMsg.alertRule.expr.replace(/\"/g, '\'').replace(/\r|\n+/g, '')
         chartInfo.elements[0].filter = encodeURIComponent(decodeURIComponent(this.promQueryParamLabels(this.currentMsg.labels)))
-        chartInfo.unit = this.currentMsg.unit
+        chartInfo.unit = this.currentMsg.alertRule.unit
+        console.log(chartInfo.unit)
         this.showFullscreen(true, chartInfo)
       } else if (this.currentMsg.alertRule.type === 2) {
         const chartInfo = lodash.cloneDeep(logData)
@@ -609,7 +610,7 @@ export default {
         }
         chartInfo.elements[0].expression = encodeURIComponent(this.currentMsg.alertRule.expr.replace(/\"/g, '\'').replace(/\r|\n+/g, ''))
         chartInfo.elements[0].filter = encodeURIComponent(decodeURIComponent(this.promQueryParamLabels(this.currentMsg.labels)))
-        chartInfo.unit = this.currentMsg.unit
+        chartInfo.unit = this.currentMsg.alertRule.unit
         this.showFullscreen(true, chartInfo)
       }
     },