diff --git a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImpl.java b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImpl.java
index 4636ba76..13bdc1cb 100644
--- a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImpl.java
+++ b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImpl.java
@@ -99,7 +99,8 @@ public class SysRegionConfigServiceImpl implements SysRegionConfigService {
                 SysRegionConfig.class))
         .map(region -> region.stream().collect(
             Collectors.toMap(SysRegionConfig::getId,
-                v -> StringUtils.isBlankOrElse(v.getRegionName(), ""))))
+                v -> StringUtils.isBlankOrElse(v.getRegionName(), ""),
+                (first, second) -> first)))
         .orElseGet(Maps::newHashMap);
   }
 
@@ -133,7 +134,8 @@ public class SysRegionConfigServiceImpl implements SysRegionConfigService {
             SysRegionConfig.class))
         .map(region -> region.stream().collect(
             Collectors.toMap(SysRegionConfig::getId,
-                v -> StringUtils.isBlankOrElse(v.getRegionName(), ""))))
+                v -> StringUtils.isBlankOrElse(v.getRegionName(), ""),
+                (first, second) -> first)))
         .orElseGet(Maps::newHashMap);
 
   }
@@ -177,7 +179,8 @@ public class SysRegionConfigServiceImpl implements SysRegionConfigService {
       return CollectionUtils.newHashMap();
     }
 
-    return regionConfigs.stream().collect(Collectors.toMap(SysRegionConfig::getId, v -> v));
+    return regionConfigs.stream().collect(
+        Collectors.toMap(SysRegionConfig::getId, v -> v, (first, second) -> first));
   }
 
   @Override
diff --git a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImpl.java b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImpl.java
index 83f27ca0..966e6994 100644
--- a/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImpl.java
+++ b/rc-service/rc-service-other/other-infrastructure/src/main/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImpl.java
@@ -408,7 +408,7 @@ public class UserRegionGatewayImpl implements UserRegionGateway {
     }
 
     Map<String, SysRegionConfig> regionMap = sysRegionConfigs.stream()
-        .collect(Collectors.toMap(SysRegionConfig::getId, v -> v));
+        .collect(Collectors.toMap(SysRegionConfig::getId, v -> v, (first, second) -> first));
     if (CollectionUtils.isEmpty(regionMap)) {
       return Boolean.FALSE;
     }
@@ -775,7 +775,7 @@ public class UserRegionGatewayImpl implements UserRegionGateway {
     }
 
     Map<String, SysRegionConfig> sysRegionConfigMap = sysRegionConfigs.stream()
-        .collect(Collectors.toMap(SysRegionConfig::getId, v -> v));
+        .collect(Collectors.toMap(SysRegionConfig::getId, v -> v, (first, second) -> first));
 
     return teamProfiles.stream()
         .collect(
diff --git a/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImplTest.java b/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImplTest.java
new file mode 100644
index 00000000..f53f1650
--- /dev/null
+++ b/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/database/mongo/service/user/region/impl/SysRegionConfigServiceImplTest.java
@@ -0,0 +1,64 @@
+package com.red.circle.other.infra.database.mongo.service.user.region.impl;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import com.red.circle.other.infra.database.mongo.entity.user.region.SysRegionConfig;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.query.Query;
+
+class SysRegionConfigServiceImplTest {
+
+  private static final String REGION_ID = "2051777551323426818";
+  private static final String REGION_NAME = "东南亚区";
+
+  private MongoTemplate mongoTemplate;
+  private SysRegionConfigServiceImpl service;
+
+  @BeforeEach
+  void setUp() {
+    mongoTemplate = mock(MongoTemplate.class);
+    service = new SysRegionConfigServiceImpl(mongoTemplate);
+  }
+
+  @Test
+  void mapRegionName_shouldKeepFirstWhenMongoReturnsDuplicateIds() {
+    when(mongoTemplate.find(any(Query.class), eq(SysRegionConfig.class))).thenReturn(List.of(
+        region(REGION_ID, "SEA", REGION_NAME),
+        region(REGION_ID, "SEA", REGION_NAME)
+    ));
+
+    Map<String, String> result = service.mapRegionName("LIKEI");
+
+    assertEquals(Map.of(REGION_ID, REGION_NAME), result);
+  }
+
+  @Test
+  void mapAvailable_shouldKeepFirstWhenMongoReturnsDuplicateIds() {
+    when(mongoTemplate.find(any(Query.class), eq(SysRegionConfig.class))).thenReturn(List.of(
+        region(REGION_ID, "SEA", REGION_NAME),
+        region(REGION_ID, "SEA2", REGION_NAME)
+    ));
+
+    Map<String, SysRegionConfig> result = service.mapAvailable(Set.of(REGION_ID));
+
+    assertEquals(1, result.size());
+    assertEquals("SEA", result.get(REGION_ID).getRegionCode());
+  }
+
+  private SysRegionConfig region(String id, String regionCode, String regionName) {
+    return new SysRegionConfig()
+        .setId(id)
+        .setRegionCode(regionCode)
+        .setRegionName(regionName)
+        .setDel(Boolean.FALSE);
+  }
+}
diff --git a/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImplTest.java b/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImplTest.java
index da73aeff..a20e4c9e 100644
--- a/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImplTest.java
+++ b/rc-service/rc-service-other/other-infrastructure/src/test/java/com/red/circle/other/infra/gateway/user/UserRegionGatewayImplTest.java
@@ -37,6 +37,7 @@ class UserRegionGatewayImplTest {
   private static final String SYS_ORIGIN = "LIKEI";
   private static final String TEAM_REGION_ID = "middle-east-region";
   private static final String TEAM_REGION_CODE = "中东区";
+  private static final String SEA_REGION_ID = "2051777551323426818";
   private static final String SOUTH_ASIA_REGION_CODE = "南亚";
   private static final String PAK_ALEX_REGION_CODE = "Pakistan - rolex";
 
@@ -158,6 +159,57 @@ class UserRegionGatewayImplTest {
     verify(countryCodeAliasSupport, never()).containsCode("PK,IN,BD,NP", "P2");
   }
 
+  @Test
+  void checkOpenDailyAutoSalary_shouldKeepFirstWhenCacheHasDuplicateRegionIds() {
+    when(sysRegionCacheService.getCache(SYS_ORIGIN)).thenReturn(List.of(
+        new SysRegionConfig()
+            .setId(SEA_REGION_ID)
+            .setRegionName("东南亚区")
+            .setMetadata(Map.of("openDailyAutoSalary", "true")),
+        new SysRegionConfig()
+            .setId(SEA_REGION_ID)
+            .setRegionName("东南亚区")
+            .setMetadata(Map.of("openDailyAutoSalary", "false"))
+    ));
+
+    Boolean result = userRegionGateway.checkOpenDailyAutoSalary(SEA_REGION_ID, SYS_ORIGIN);
+
+    assertEquals(Boolean.TRUE, result);
+  }
+
+  @Test
+  void mapUserRegionConfig_shouldKeepFirstWhenTeamRegionConfigHasDuplicateIds() {
+    SysRegionConfig firstRegion = new SysRegionConfig()
+        .setId(SEA_REGION_ID)
+        .setRegionCode("SEA")
+        .setRegionName("东南亚区");
+    when(teamMemberService.listByMemberIds(Set.of(TEAM_USER_ID))).thenReturn(List.of(
+        new TeamMember()
+            .setMemberId(TEAM_USER_ID)
+            .setTeamId(TEAM_ID)
+            .setSysOrigin(SYS_ORIGIN)
+            .setRole(TeamMemberRole.OWN)
+    ));
+    when(teamProfileService.listByIds(Set.of(TEAM_ID))).thenReturn(List.of(
+        new TeamProfile().setId(TEAM_ID).setRegion(SEA_REGION_ID)
+    ));
+    when(sysRegionConfigService.listAvailable(Set.of(SEA_REGION_ID))).thenReturn(List.of(
+        firstRegion,
+        new SysRegionConfig()
+            .setId(SEA_REGION_ID)
+            .setRegionCode("SEA2")
+            .setRegionName("东南亚区")
+    ));
+    when(userRegionInfraConvertor.toRegionConfig(firstRegion)).thenReturn(
+        new RegionConfig().setId(SEA_REGION_ID).setRegionCode("SEA")
+    );
+
+    Map<Long, RegionConfig> result = userRegionGateway.mapUserRegionConfig(
+        SYS_ORIGIN, Set.of(TEAM_USER_ID));
+
+    assertEquals("SEA", result.get(TEAM_USER_ID).getRegionCode());
+  }
+
   private SysRegionConfig region(String regionCode, String countryCodes, String langeCodes) {
     return new SysRegionConfig()
         .setId(regionCode)