diff --git a/liteyuki/resources/lagrange_sign/templates/js/sign_status.js b/liteyuki/resources/lagrange_sign/templates/js/sign_status.js
index 2452ce27..2d957d64 100644
--- a/liteyuki/resources/lagrange_sign/templates/js/sign_status.js
+++ b/liteyuki/resources/lagrange_sign/templates/js/sign_status.js
@@ -12,6 +12,16 @@ data.forEach((item) => {
     document.body.appendChild(signChartDiv)
 
     let signChart = echarts.init(document.getElementById(chartID))
+    let timeCount = []
+
+    item["counts"].forEach((count, index) => {
+        // 计算平均值，index - 1的count + index的count + index + 1的count /3
+        if (index > 0) {
+            timeCount.push((item["counts"][index] - item["counts"][index - 1]))
+        }
+    })
+
+    console.log(timeCount)
 
     signChart.setOption(
         {
@@ -26,14 +36,26 @@ data.forEach((item) => {
                 type: 'category',
                 data: item["times"].map(timestampToTime),
             },
-            yAxis: {
-                type: 'value',
-                min: Math.min(...item["counts"]),
-            },
+            yAxis: [
+                {
+                    type: 'value',
+                    min: Math.min(...item["counts"]),
+                },
+                {
+                    type: 'value',
+                    min: Math.min(...timeCount),
+                }
+            ],
             series: [
                 {
                     data: item["counts"],
-                    type: 'line'
+                    type: 'line',
+                    yAxisIndex: 0
+                },
+                {
+                    data: timeCount,
+                    type: 'line',
+                    yAxisIndex: 1
                 }
             ]
         }