diff --git a/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListDetialServiceImpl.java b/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListDetialServiceImpl.java
index 46a7149..7d5909d 100644
--- a/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListDetialServiceImpl.java
+++ b/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListDetialServiceImpl.java
@@ -20,12 +20,16 @@ import org.springframework.transaction.annotation.Transactional;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
 import java.util.Date;
+import java.util.HashMap;
 import java.util.LinkedHashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
 import lombok.extern.slf4j.Slf4j;
 import java.util.Set;
 
+import com.alibaba.fastjson.JSONObject;
+
 @Service
 public class TaskListDetialServiceImpl extends ServiceImpl<TaskListDetialMapper, TaskListDetial> implements ITaskListDetialService {
 
@@ -204,19 +208,16 @@ public class TaskListDetialServiceImpl extends ServiceImpl<TaskListDetialMapper,
                 task.setFollowersName("");
             }
         }
-        boolean clearStartTime = task.getStartTime() == null && existing.getStartTime() != null;
-        boolean clearEndTime = task.getEndTime() == null && existing.getEndTime() != null;
+        // 前端没传日期则保留原值，避免局部更新时意外清除
+        if (task.getStartTime() == null) {
+            task.setStartTime(existing.getStartTime());
+        }
+        if (task.getEndTime() == null) {
+            task.setEndTime(existing.getEndTime());
+        }
 
         taskListDetialMapper.updateById(task);
 
-        if (clearStartTime || clearEndTime) {
-            UpdateWrapper<TaskListDetial> uw = new UpdateWrapper<>();
-            uw.eq("id", task.getId());
-            if (clearStartTime) uw.set("start_time", null);
-            if (clearEndTime) uw.set("end_time", null);
-            taskListDetialMapper.update(null, uw);
-        }
-
         taskListDetialMapper.appendAssigner(task.getId(), userId, loginUser.getRealname());
     }
 
@@ -544,43 +545,108 @@ public class TaskListDetialServiceImpl extends ServiceImpl<TaskListDetialMapper,
         if (list == null || list.isEmpty()) {
             return;
         }
+
+        // 1. 收集所有唯一的用户名和用户ID
+        Set<String> allUsernames = new LinkedHashSet<>();
+        Set<String> allUserIds = new LinkedHashSet<>();
         for (TaskListDetial task : list) {
             if (oConvertUtils.isNotEmpty(task.getCreateBy())) {
-                List<com.alibaba.fastjson.JSONObject> users = sysBaseAPI.queryUsersByUsernames(task.getCreateBy());
-                if (users != null && !users.isEmpty()) {
-                    task.setCreateByName(users.get(0).getString("realname"));
+                allUsernames.add(task.getCreateBy());
+            }
+            collectUserIds(task.getAssigneeId(), allUserIds);
+            collectUserIds(task.getParticipantId(), allUserIds);
+            collectUserIds(task.getFollowersId(), allUserIds);
+        }
+
+        // 2. 批量查询，构建映射表
+        Map<String, String> usernameToRealname = new HashMap<>();
+        if (!allUsernames.isEmpty()) {
+            List<JSONObject> users = sysBaseAPI.queryUsersByUsernames(String.join(",", allUsernames));
+            if (users != null) {
+                for (JSONObject u : users) {
+                    usernameToRealname.put(u.getString("username"), u.getString("realname"));
+                }
+            }
+        }
+
+        Map<String, String> idToRealname = new HashMap<>();
+        if (!allUserIds.isEmpty()) {
+            List<JSONObject> users = sysBaseAPI.queryUsersByIds(String.join(",", allUserIds));
+            if (users != null) {
+                for (JSONObject u : users) {
+                    idToRealname.put(u.getString("id"), u.getString("realname"));
+                }
+            }
+        }
+
+        // 3. 从映射表填充，无需再查数据库
+        for (TaskListDetial task : list) {
+            if (oConvertUtils.isNotEmpty(task.getCreateBy())) {
+                String name = usernameToRealname.get(task.getCreateBy());
+                if (name != null) {
+                    task.setCreateByName(name);
                 }
             }
             if (oConvertUtils.isNotEmpty(task.getAssigneeId()) && oConvertUtils.isEmpty(task.getAssigneeName())) {
-                task.setAssigneeName(translateUserIdsToNames(task.getAssigneeId()));
+                task.setAssigneeName(buildNamesFromMap(task.getAssigneeId(), idToRealname));
             }
             if (oConvertUtils.isNotEmpty(task.getParticipantId()) && oConvertUtils.isEmpty(task.getParticipantName())) {
-                task.setParticipantName(translateUserIdsToNames(task.getParticipantId()));
+                task.setParticipantName(buildNamesFromMap(task.getParticipantId(), idToRealname));
             }
             if (oConvertUtils.isNotEmpty(task.getFollowersId()) && oConvertUtils.isEmpty(task.getFollowersName())) {
-                task.setFollowersName(translateUserIdsToNames(task.getFollowersId()));
+                task.setFollowersName(buildNamesFromMap(task.getFollowersId(), idToRealname));
             }
         }
     }
 
+    private void collectUserIds(String idsStr, Set<String> idSet) {
+        if (oConvertUtils.isEmpty(idsStr)) {
+            return;
+        }
+        for (String id : idsStr.split(",")) {
+            String trimmed = id.trim();
+            if (oConvertUtils.isNotEmpty(trimmed)) {
+                idSet.add(trimmed);
+            }
+        }
+    }
+
+    private String buildNamesFromMap(String idsStr, Map<String, String> idToRealname) {
+        if (oConvertUtils.isEmpty(idsStr) || idToRealname.isEmpty()) {
+            return null;
+        }
+        StringBuilder sb = new StringBuilder();
+        for (String id : idsStr.split(",")) {
+            String trimmed = id.trim();
+            if (oConvertUtils.isNotEmpty(trimmed)) {
+                String name = idToRealname.get(trimmed);
+                if (name != null) {
+                    if (sb.length() > 0) {
+                        sb.append(",");
+                    }
+                    sb.append(name);
+                }
+            }
+        }
+        return sb.length() > 0 ? sb.toString() : null;
+    }
+
     private String translateUserIdsToNames(String ids) {
         if (oConvertUtils.isEmpty(ids)) {
             return null;
         }
-        String[] idArr = ids.split(",");
-        StringBuilder names = new StringBuilder();
-        for (String id : idArr) {
-            if (oConvertUtils.isNotEmpty(id)) {
-                LoginUser user = sysBaseAPI.getUserById(id.trim());
-                if (user != null) {
-                    if (names.length() > 0) {
-                        names.append(",");
-                    }
-                    names.append(user.getRealname());
-                }
-            }
+        List<JSONObject> users = sysBaseAPI.queryUsersByIds(ids);
+        if (users == null || users.isEmpty()) {
+            return null;
         }
-        return names.length() > 0 ? names.toString() : null;
+        StringBuilder names = new StringBuilder();
+        for (JSONObject user : users) {
+            if (names.length() > 0) {
+                names.append(",");
+            }
+            names.append(user.getString("realname"));
+        }
+        return names.toString();
     }
 
     private String mergeIds(String existingIds, String newIds) {
diff --git a/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListServiceImpl.java b/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListServiceImpl.java
index dd90ee2..a1b75e1 100644
--- a/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListServiceImpl.java
+++ b/jeecg-module-supervision/src/main/java/org/jeecg/modules/tasklist/service/impl/TaskListServiceImpl.java
@@ -28,9 +28,15 @@ import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.conditions.update.UpdateWrapper;
 import java.io.Serializable;
 import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Collection;
 import java.util.Objects;
+import java.util.stream.Collectors;
+
+import com.alibaba.fastjson.JSONObject;
 
 /**
  * @Description: 任务清单表
@@ -549,42 +555,62 @@ public class TaskListServiceImpl extends ServiceImpl<TaskListMapper, TaskList> i
 	}
 
 	private List<TaskList> enrichListSummaries(List<TaskList> lists, String currentUserId) {
+		if (lists == null || lists.isEmpty()) {
+			return lists;
+		}
+
 		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 		for (TaskList list : lists) {
 			if (list.getCreateTime() != null) {
 				list.setCreateTimeStr(sdf.format(list.getCreateTime()));
 			}
+		}
 
-			LambdaQueryWrapper<TaskListPermission> ownerQuery = new LambdaQueryWrapper<>();
-			ownerQuery.eq(TaskListPermission::getMainId, list.getId());
-			ownerQuery.eq(TaskListPermission::getPermission, "1");
-			TaskListPermission owner = taskListPermissionMapper.selectOne(ownerQuery);
-			if (owner != null) {
-				LoginUser ownerUser = sysBaseAPI.getUserById(owner.getUserId());
-				if (ownerUser != null) {
-					list.setOwnerName(ownerUser.getRealname());
-				}
-				if (currentUserId != null && currentUserId.equals(owner.getUserId())) {
-					list.setMyPermission("1");
+		// 1. 收集所有清单ID，批量查询权限表
+		List<String> mainIds = lists.stream().map(TaskList::getId).collect(Collectors.toList());
+		List<TaskListPermission> allPerms = taskListPermissionMapper.selectList(
+			new LambdaQueryWrapper<TaskListPermission>().in(TaskListPermission::getMainId, mainIds)
+		);
+
+		// 2. 收集所有用户ID，批量查询用户
+		java.util.Set<String> allUserIds = new java.util.LinkedHashSet<>();
+		for (TaskListPermission perm : allPerms) {
+			allUserIds.add(perm.getUserId());
+		}
+		Map<String, String> idToName = new HashMap<>();
+		if (!allUserIds.isEmpty()) {
+			List<JSONObject> users = sysBaseAPI.queryUsersByIds(String.join(",", allUserIds));
+			if (users != null) {
+				for (JSONObject u : users) {
+					idToName.put(u.getString("id"), u.getString("realname"));
 				}
 			}
+		}
 
-			LambdaQueryWrapper<TaskListPermission> collabQuery = new LambdaQueryWrapper<>();
-			collabQuery.eq(TaskListPermission::getMainId, list.getId());
-			collabQuery.ne(TaskListPermission::getPermission, "1");
-			List<TaskListPermission> collabs = taskListPermissionMapper.selectList(collabQuery);
-			if (!collabs.isEmpty()) {
-				List<String> collabUserIds = collabs.stream().map(TaskListPermission::getUserId).collect(java.util.stream.Collectors.toList());
-				List<String> collabNames = new java.util.ArrayList<>();
-				for (String collabUserId : collabUserIds) {
-					LoginUser collabUser = sysBaseAPI.getUserById(collabUserId);
-					if (collabUser != null && collabUser.getRealname() != null) {
-						collabNames.add(collabUser.getRealname());
+		// 3. 按清单分组，从映射表填充
+		Map<String, List<TaskListPermission>> permByMainId = allPerms.stream()
+			.collect(Collectors.groupingBy(TaskListPermission::getMainId));
+
+		for (TaskList list : lists) {
+			List<TaskListPermission> perms = permByMainId.getOrDefault(list.getId(), java.util.Collections.emptyList());
+			List<String> collabNames = new ArrayList<>();
+			for (TaskListPermission perm : perms) {
+				String name = idToName.get(perm.getUserId());
+				if (name == null) continue;
+				if ("1".equals(perm.getPermission())) {
+					list.setOwnerName(name);
+					if (currentUserId != null && currentUserId.equals(perm.getUserId())) {
+						list.setMyPermission("1");
 					}
+				} else {
+					collabNames.add(name);
 				}
+			}
+			if (!collabNames.isEmpty()) {
 				list.setCollaboratorNames(String.join(", ", collabNames));
 			}
 		}
+
 		return lists;
 	}
 
@@ -595,16 +621,27 @@ public class TaskListServiceImpl extends ServiceImpl<TaskListMapper, TaskList> i
 		query.orderByAsc(TaskListPermission::getCreateTime);
 		List<TaskListPermission> perms = taskListPermissionMapper.selectList(query);
 
-		List<CollaboratorVO> result = new java.util.ArrayList<>();
+		if (perms.isEmpty()) {
+			return java.util.Collections.emptyList();
+		}
+
+		// 批量查询所有协作用户
+		String userIds = perms.stream().map(TaskListPermission::getUserId).collect(Collectors.joining(","));
+		Map<String, String> idToName = new HashMap<>();
+		List<JSONObject> users = sysBaseAPI.queryUsersByIds(userIds);
+		if (users != null) {
+			for (JSONObject u : users) {
+				idToName.put(u.getString("id"), u.getString("realname"));
+			}
+		}
+
+		List<CollaboratorVO> result = new ArrayList<>();
 		for (TaskListPermission perm : perms) {
 			CollaboratorVO vo = new CollaboratorVO();
 			vo.setPermissionId(perm.getId());
 			vo.setUserId(perm.getUserId());
 			vo.setPermission(perm.getPermission());
-			LoginUser user = sysBaseAPI.getUserById(perm.getUserId());
-			if (user != null) {
-				vo.setUsername(user.getRealname());
-			}
+			vo.setUsername(idToName.getOrDefault(perm.getUserId(), null));
 			result.add(vo);
 		}
 		return result;