diff --git a/backend/src/main/java/com/designhub/service/DepartmentService.java b/backend/src/main/java/com/designhub/service/DepartmentService.java
index be8ed4f..1b391b9 100644
--- a/backend/src/main/java/com/designhub/service/DepartmentService.java
+++ b/backend/src/main/java/com/designhub/service/DepartmentService.java
@@ -28,6 +28,7 @@ import java.util.stream.Collectors;
 /**
  * 部门管理Service
  */
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class DepartmentService {
@@ -210,20 +211,42 @@ public class DepartmentService {
             existDept.setOverLimitAction(request.getOverLimitAction());
         }
 
-        departmentMapper.updateById(existDept);
+        try {
+            departmentMapper.updateById(existDept);
+            log.info("更新部门成功: id={}, deptName={}", id, existDept.getDeptName());
+        } catch (Exception e) {
+            log.error("更新部门失败: id={}, error={}", id, e.getMessage(), e);
+            throw new BusinessException("更新部门失败: " + e.getMessage());
+        }
 
         // 同步积分池
-        teamScorePoolService.upsertPool(existDept.getId(), existDept.getDeptName());
+        try {
+            teamScorePoolService.upsertPool(existDept.getId(), existDept.getDeptName());
+            log.info("同步积分池成功: deptId={}, deptName={}", existDept.getId(), existDept.getDeptName());
+        } catch (Exception e) {
+            log.error("同步积分池失败: deptId={}, error={}", existDept.getId(), e.getMessage(), e);
+            throw new BusinessException("同步积分池失败: " + e.getMessage());
+        }
+
+        // 更新积分池限制配置（仅需求部门）
         if ("demand".equals(existDept.getDeptType()) &&
             (request.getLimitEnabled() != null || request.getLimitPeriod() != null ||
              request.getPeriodLimit() != null || request.getAlertThreshold() != null)) {
-            teamScorePoolService.updateLimitConfig(
-                existDept.getId(),
-                request.getLimitEnabled(),
-                request.getLimitPeriod(),
-                request.getPeriodLimit(),
-                request.getAlertThreshold()
-            );
+            try {
+                teamScorePoolService.updateLimitConfig(
+                    existDept.getId(),
+                    request.getLimitEnabled(),
+                    request.getLimitPeriod(),
+                    request.getPeriodLimit(),
+                    request.getAlertThreshold()
+                );
+                log.info("更新积分池限制配置成功: deptId={}, limitEnabled={}, limitPeriod={}, periodLimit={}, alertThreshold={}",
+                    existDept.getId(), request.getLimitEnabled(), request.getLimitPeriod(),
+                    request.getPeriodLimit(), request.getAlertThreshold());
+            } catch (Exception e) {
+                log.error("更新积分池限制配置失败: deptId={}, error={}", existDept.getId(), e.getMessage(), e);
+                throw new BusinessException("更新积分池限制配置失败: " + e.getMessage());
+            }
         }
 
         return true;
diff --git a/backend/src/main/java/com/designhub/service/TeamScorePoolService.java b/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
index 36899bb..a2faba8 100644
--- a/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
+++ b/backend/src/main/java/com/designhub/service/TeamScorePoolService.java
@@ -7,6 +7,7 @@ import com.designhub.exception.BusinessException;
 import com.designhub.mapper.DepartmentMapper;
 import com.designhub.mapper.TeamScorePoolMapper;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 
@@ -258,23 +259,50 @@ public class TeamScorePoolService {
     @Transactional(rollbackFor = Exception.class)
     public void updateLimitConfig(Long deptId, Integer limitEnabled, String limitPeriod,
                                   Integer periodLimit, Integer alertThreshold) {
-        TeamScorePool pool = upsertPool(deptId, null);
-        if (limitEnabled != null) {
-            pool.setLimitEnabled(limitEnabled);
+        try {
+            log.info("开始更新积分池限制配置: deptId={}, limitEnabled={}, limitPeriod={}, periodLimit={}, alertThreshold={}",
+                deptId, limitEnabled, limitPeriod, periodLimit, alertThreshold);
+            
+            TeamScorePool pool = upsertPool(deptId, null);
+            if (pool == null) {
+                throw new BusinessException("积分池不存在且创建失败: deptId=" + deptId);
+            }
+            
+            boolean hasUpdate = false;
+            if (limitEnabled != null) {
+                pool.setLimitEnabled(limitEnabled);
+                hasUpdate = true;
+            }
+            if (limitPeriod != null) {
+                pool.setLimitPeriod(limitPeriod);
+                hasUpdate = true;
+            }
+            if (periodLimit != null) {
+                pool.setPeriodLimit(periodLimit);
+                hasUpdate = true;
+            }
+            if (alertThreshold != null) {
+                pool.setAlertThreshold(alertThreshold);
+                hasUpdate = true;
+            }
+            if (pool.getPeriodStartTime() == null) {
+                pool.setPeriodStartTime(LocalDateTime.now());
+                hasUpdate = true;
+            }
+            
+            if (hasUpdate) {
+                int rows = teamScorePoolMapper.updateById(pool);
+                log.info("更新积分池限制配置成功: deptId={}, affectedRows={}", deptId, rows);
+            } else {
+                log.warn("没有需要更新的积分池限制配置: deptId={}", deptId);
+            }
+        } catch (BusinessException e) {
+            log.error("更新积分池限制配置业务异常: deptId={}, error={}", deptId, e.getMessage());
+            throw e;
+        } catch (Exception e) {
+            log.error("更新积分池限制配置失败: deptId={}, error={}", deptId, e.getMessage(), e);
+            throw new BusinessException("更新积分池限制配置失败: " + e.getMessage());
         }
-        if (limitPeriod != null) {
-            pool.setLimitPeriod(limitPeriod);
-        }
-        if (periodLimit != null) {
-            pool.setPeriodLimit(periodLimit);
-        }
-        if (alertThreshold != null) {
-            pool.setAlertThreshold(alertThreshold);
-        }
-        if (pool.getPeriodStartTime() == null) {
-            pool.setPeriodStartTime(LocalDateTime.now());
-        }
-        teamScorePoolMapper.updateById(pool);
     }
 
     /**