diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/ReportServiceImpl.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/ReportServiceImpl.java
index e9bbe14..90949d5 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/ReportServiceImpl.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/service/impl/ReportServiceImpl.java
@@ -174,7 +174,7 @@ public class ReportServiceImpl extends BaseServiceImpl implements IReportService
         Iterator<Map<String, Object>> iterator = grid.iterator();
         while (iterator.hasNext()) {
             Map<String, Object> map = iterator.next();
-            List<String> colors = new ArrayList<>();
+            Set<String> colors = new HashSet<>();
             Object highRiskGrade = map.get("HIGH_RISK_GRADE");
             if(highRiskGrade != null && StringUtils.isNotBlank(highRiskGrade.toString())) {
                 List<String> grades = Arrays.asList(highRiskGrade.toString().split(","));