diff --git a/pqs-common/common-echarts/src/main/java/com/njcn/echarts/json/LineGenerator.java b/pqs-common/common-echarts/src/main/java/com/njcn/echarts/json/LineGenerator.java
index bb1beabee..4a5ed4539 100644
--- a/pqs-common/common-echarts/src/main/java/com/njcn/echarts/json/LineGenerator.java
+++ b/pqs-common/common-echarts/src/main/java/com/njcn/echarts/json/LineGenerator.java
@@ -806,7 +806,7 @@ public class LineGenerator {
             labelPositions.add(new int[]{findClosestValidIndex(compressed.data, lastTime.floatValue()), lastTime.intValue()});
         }
 
-        // lastTime+20（始终显示，数据结束位置横坐标）
+        // 最后一组数据（始终显示，数据结束位置横坐标）
         if (lastTime != null) {
             float lastTime20 = lastTime.floatValue() + nPush;
             int lastTime20Idx = findClosestValidIndex(compressed.data, lastTime20);