diff --git a/src/utils/tools.js b/src/utils/tools.js
index 94f01787..36b225de 100644
--- a/src/utils/tools.js
+++ b/src/utils/tools.js
@@ -1080,9 +1080,16 @@ export function colorGradientCalculation (startColor, endColor, values) {
   const gDiff = endRgbArr[1] - startRgbArr[1]
   const bDiff = endRgbArr[2] - startRgbArr[2]
   const valueDiff = values[0] - values[values.length - 1]
-  values.forEach((v, i) => {
-    colors.push(`rgb(${startRgbArr[0] + Math.floor(rDiff * (valueDiff - diff(v)) / valueDiff)},${startRgbArr[1] + Math.floor(gDiff * (valueDiff - diff(v)) / valueDiff)},${startRgbArr[2] + Math.floor(bDiff * (valueDiff - diff(v)) / valueDiff)})`)
-  })
+  if (valueDiff > 0) {
+    values.forEach((v, i) => {
+      colors.push(`rgb(${startRgbArr[0] + Math.floor(rDiff * (valueDiff - diff(v)) / valueDiff)},${startRgbArr[1] + Math.floor(gDiff * (valueDiff - diff(v)) / valueDiff)},${startRgbArr[2] + Math.floor(bDiff * (valueDiff - diff(v)) / valueDiff)})`)
+    })
+  } else {
+    values.forEach((v, i) => {
+      colors.push('rgb(64,83,126)')
+    })
+  }
+
   function diff (v) {
     return v - values[values.length - 1]
   }
diff --git a/src/views/charts2/charts/linkMonitor/LinkBlock.vue b/src/views/charts2/charts/linkMonitor/LinkBlock.vue
index c5508e65..ed0b5372 100644
--- a/src/views/charts2/charts/linkMonitor/LinkBlock.vue
+++ b/src/views/charts2/charts/linkMonitor/LinkBlock.vue
@@ -19,7 +19,7 @@
           <template #reference>
             <div class="block-list__block" :key="index" @click="drillLinkId(item)">
               <span class="block-hex">
-                <span class="block-hex-in" :style="`background-color: ${item.color}`"></span>
+                <span class="block-hex-in" :test-id="`linkBlock${index}`" :style="`background-color: ${item.color}`"></span>
               </span>
             </div>
           </template>
@@ -72,7 +72,7 @@
           <template #reference>
             <div class="block-list__block" :key="index" @click="drillNextHop(item)">
               <span class="block-hex">
-                <span class="block-hex-in" :style="`background-color: ${item.color}`"></span>
+                <span class="block-hex-in" :test-id="`nextHopBlock${index}`" :style="`background-color: ${item.color}`"></span>
               </span>
             </div>
           </template>
diff --git a/test/views/charts2/charts/linkMonitor/LinkBlock.test.js b/test/views/charts2/charts/linkMonitor/LinkBlock.test.js
index 1d577216..71de72a4 100644
--- a/test/views/charts2/charts/linkMonitor/LinkBlock.test.js
+++ b/test/views/charts2/charts/linkMonitor/LinkBlock.test.js
@@ -4,6 +4,7 @@ import axios from 'axios'
 import chartMixin from '@/views/charts2/chart-mixin'
 import { mockData, linkInfoData } from './MockData/LinkBlock'
 import common from '@/mixins/common'
+import ElementPlus from 'element-plus'
 
 const mockGet1 = mockData.common.data1
 const mockGet2 = mockData.common.data2
@@ -21,7 +22,7 @@ var wrapper = null
  * 进行axios请求，并挂载vue实例
  *
  */
-function axiosPostAndMounted (list1, list2) {
+function axiosPostAndMounted (list1, list2, loadEle) {
   require('vue-router').useRoute.mockReturnValue({ query: {} })
 
   const data1 = list1 || mockGet1
@@ -45,6 +46,9 @@ function axiosPostAndMounted (list1, list2) {
     propsData: {
       timeFilter
     },
+    global: {
+      plugins: loadEle ? [ElementPlus] : []
+    },
     mixins: [common, chartMixin]
   })
 }
@@ -163,4 +167,21 @@ describe('views/charts2/charts/linkMonitor/LinkBlock.vue测试', () => {
       resolve()
     }, 200))
   })
+  test('链路几个数据的值相等，下一跳只有一个数据时，色块颜色是否是蓝色rgb(64,83,126)', async () => {
+    const list1 = mockData.equalValue.data1
+    const list2 = mockData.equalValue.data2
+
+    axiosPostAndMounted(list1, list2, true)
+
+    await new Promise(resolve => setTimeout(() => {
+      const linkBlock0 = wrapper.get('[test-id="linkBlock0"]')
+      const linkBlock1 = wrapper.get('[test-id="linkBlock1"]')
+      const nextHopBlock0 = wrapper.get('[test-id="nextHopBlock0"]')
+
+      expect(linkBlock0.attributes('style')).toBe('background-color: rgb(64, 83, 126);')
+      expect(linkBlock1.attributes('style')).toBe('background-color: rgb(64, 83, 126);')
+      expect(nextHopBlock0.attributes('style')).toBe('background-color: rgb(64, 83, 126);')
+      resolve()
+    }, 200))
+  })
 })
diff --git a/test/views/charts2/charts/linkMonitor/MockData/LinkBlock.js b/test/views/charts2/charts/linkMonitor/MockData/LinkBlock.js
index cf0aeada..41fed3fc 100644
--- a/test/views/charts2/charts/linkMonitor/MockData/LinkBlock.js
+++ b/test/views/charts2/charts/linkMonitor/MockData/LinkBlock.js
@@ -238,6 +238,50 @@ export const mockData = {
         msg: 'OK'
       }
     }
+  },
+  equalValue: {
+    data1: {
+      "status": 200,
+      data: {
+        "data": {
+          "resultType": "table",
+          "result": [
+            {
+              "linkId": "1025",
+              "outBytes": "0",
+              "outBitsRate": 0.0,
+              "inBytes": "104870932",
+              "inBitsRate": 38841.12
+            },
+            {
+              "linkId": "512",
+              "outBytes": "104870932",
+              "outBitsRate": 38841.12,
+              "inBytes": "0",
+              "inBitsRate": 0.0
+            }
+          ]
+        }
+      }
+    },
+    data2: {
+      "status": 200,
+      "data": {
+        "data": {
+          "resultType": "table",
+          "result": [
+            {
+              "outLinkDirection": "太原",
+              "inLinkDirection": "西宁",
+              "outBytes": "104870932",
+              "outBitsRate": 38841.12,
+              "inBytes": "104870932",
+              "inBitsRate": 38841.12
+            }
+          ]
+        }
+      }
+    }
   }
 }