diff --git a/epmet-module/data-aggregator/data-aggregator-server/src/main/java/com/epmet/dataaggre/service/impl/CoverageServiceImpl.java b/epmet-module/data-aggregator/data-aggregator-server/src/main/java/com/epmet/dataaggre/service/impl/CoverageServiceImpl.java
index a94b485714..3d919688b2 100644
--- a/epmet-module/data-aggregator/data-aggregator-server/src/main/java/com/epmet/dataaggre/service/impl/CoverageServiceImpl.java
+++ b/epmet-module/data-aggregator/data-aggregator-server/src/main/java/com/epmet/dataaggre/service/impl/CoverageServiceImpl.java
@@ -381,7 +381,7 @@ public class CoverageServiceImpl implements CoverageService {
             return icEventEntities.stream()
                     .map(e -> new CoverageAnalisisDataListResultDTO(
                             e.getId(), categoryKey, isPage ? categoryDict.getCategoryName() : null, placeType,
-                            e.getEventContent().length() < 51 ? e.getEventContent() : e.getEventContent().substring(NumConstant.ZERO, NumConstant.FIFTY).concat(StrConstant.ELLIPSIS),
+                            e.getEventContent().length() < 21 ? e.getEventContent() : e.getEventContent().substring(NumConstant.ZERO, 20).concat(StrConstant.ELLIPSIS),
                             e.getLatitude(), e.getLongitude()))
                     .collect(Collectors.toList());