diff --git a/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LineServiceImpl.java b/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LineServiceImpl.java
index 8331ca4cb..a263fd192 100644
--- a/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LineServiceImpl.java
+++ b/coolstore-partner-service/src/main/java/com/cool/store/service/impl/LineServiceImpl.java
@@ -291,7 +291,7 @@ public class LineServiceImpl implements LineService {
                 partnerListVO.setRegionName(regionNameMap.get(x.getRegionId()));
             }
             StringBuilder investmentManagerUserName = new StringBuilder();
-            Set<String> userIdSet = investmentManagerIdMapByLineId.get(x.getId());
+            Set<String> userIdSet = investmentManagerIdMapByLineId.getOrDefault(x.getId(),new HashSet<>());
             userIdSet.add(x.getInvestmentManager());
             for (String s : userIdSet) {
                 investmentManagerUserName.append(userNameMap.get(s)).append(",");