diff --git a/ruoyi-api/src/main/java/org/dromara/system/api/UserService.java b/ruoyi-api/src/main/java/org/dromara/system/api/UserService.java
index 09824133b..d1b8009ef 100644
--- a/ruoyi-api/src/main/java/org/dromara/system/api/UserService.java
+++ b/ruoyi-api/src/main/java/org/dromara/system/api/UserService.java
@@ -93,6 +93,14 @@ public interface UserService {
      */
     List<UserDTO> selectUsersByDeptIds(Collection<Long> deptIds);
 
+    /**
+     * 通过部门ID查询用户ID
+     *
+     * @param deptIds 部门ids
+     * @return 用户ids
+     */
+    List<Long> selectUserIdsByDeptIds(Collection<Long> deptIds);
+
     /**
      * 通过岗位ID查询用户
      *
@@ -101,6 +109,14 @@ public interface UserService {
      */
     List<UserDTO> selectUsersByPostIds(Collection<Long> postIds);
 
+    /**
+     * 通过岗位ID查询用户ID
+     *
+     * @param postIds 岗位ids
+     * @return 用户ids
+     */
+    List<Long> selectUserIdsByPostIds(Collection<Long> postIds);
+
     /**
      * 根据用户 ID 列表查询用户昵称映射关系
      *
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysUserServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysUserServiceImpl.java
index 717c181e4..5a6fb4116 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysUserServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysUserServiceImpl.java
@@ -690,8 +690,12 @@ public class SysUserServiceImpl implements ISysUserService, UserService {
         if (CollUtil.isEmpty(roleIds)) {
             return List.of();
         }
-        List<SysUserRole> userRoles = userRoleMapper.lambda().in(SysUserRole::getRoleId, roleIds).list();
-        return StreamUtils.toList(userRoles, SysUserRole::getUserId);
+        List<SysUserRole> userRoles = userRoleMapper.lambda()
+            .select(SysUserRole::getUserId)
+            .in(SysUserRole::getRoleId, roleIds)
+            .list();
+        Set<Long> userIds = StreamUtils.toSet(userRoles, SysUserRole::getUserId);
+        return new ArrayList<>(userIds);
     }
 
     /**
@@ -702,17 +706,8 @@ public class SysUserServiceImpl implements ISysUserService, UserService {
      */
     @Override
     public List<UserDTO> selectUsersByRoleIds(Collection<Long> roleIds) {
-        if (CollUtil.isEmpty(roleIds)) {
-            return List.of();
-        }
-
-        // 通过角色ID获取用户角色信息
-        List<SysUserRole> userRoles = userRoleMapper.lambda().in(SysUserRole::getRoleId, roleIds).list();
-
-        // 获取用户ID列表
-        Set<Long> userIds = StreamUtils.toSet(userRoles, SysUserRole::getUserId);
-
-        return this.selectListByIds(new ArrayList<>(userIds));
+        List<Long> userIds = this.selectUserIdsByRoleIds(roleIds);
+        return this.selectListByIds(userIds);
     }
 
     /**
@@ -726,14 +721,33 @@ public class SysUserServiceImpl implements ISysUserService, UserService {
         if (CollUtil.isEmpty(deptIds)) {
             return List.of();
         }
-        List<SysUserVo> list = userMapper.lambda()
+        List<SysUser> list = userMapper.lambda()
             .select(SysUser::getUserId, SysUser::getUserName, SysUser::getNickName, SysUser::getEmail, SysUser::getPhoneNumber)
             .eq(SysUser::getStatus, SystemConstants.NORMAL)
             .in(SysUser::getDeptId, deptIds)
-            .voList();
+            .list();
         return BeanUtil.copyToList(list, UserDTO.class);
     }
 
+    /**
+     * 通过部门ID查询用户ID
+     *
+     * @param deptIds 部门ids
+     * @return 用户ids
+     */
+    @Override
+    public List<Long> selectUserIdsByDeptIds(Collection<Long> deptIds) {
+        if (CollUtil.isEmpty(deptIds)) {
+            return List.of();
+        }
+        List<SysUser> list = userMapper.lambda()
+            .select(SysUser::getUserId)
+            .eq(SysUser::getStatus, SystemConstants.NORMAL)
+            .in(SysUser::getDeptId, deptIds)
+            .list();
+        return StreamUtils.toList(list, SysUser::getUserId);
+    }
+
     /**
      * 通过岗位ID查询用户
      *
@@ -742,17 +756,27 @@ public class SysUserServiceImpl implements ISysUserService, UserService {
      */
     @Override
     public List<UserDTO> selectUsersByPostIds(Collection<Long> postIds) {
+        List<Long> userIds = this.selectUserIdsByPostIds(postIds);
+        return this.selectListByIds(userIds);
+    }
+
+    /**
+     * 通过岗位ID查询用户ID
+     *
+     * @param postIds 岗位ids
+     * @return 用户ids
+     */
+    @Override
+    public List<Long> selectUserIdsByPostIds(Collection<Long> postIds) {
         if (CollUtil.isEmpty(postIds)) {
             return List.of();
         }
-
-        // 通过岗位ID获取用户岗位信息
-        List<SysUserPost> userPosts = userPostMapper.lambda().in(SysUserPost::getPostId, postIds).list();
-
-        // 获取用户ID列表
+        List<SysUserPost> userPosts = userPostMapper.lambda()
+            .select(SysUserPost::getUserId)
+            .in(SysUserPost::getPostId, postIds)
+            .list();
         Set<Long> userIds = StreamUtils.toSet(userPosts, SysUserPost::getUserId);
-
-        return this.selectListByIds(new ArrayList<>(userIds));
+        return new ArrayList<>(userIds);
     }
 
     /**
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/handler/WorkflowPermissionHandler.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/handler/WorkflowPermissionHandler.java
deleted file mode 100644
index f5e41e44a..000000000
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/handler/WorkflowPermissionHandler.java
+++ /dev/null
@@ -1,69 +0,0 @@
-package org.dromara.workflow.handler;
-
-import cn.hutool.core.collection.CollUtil;
-import cn.hutool.core.convert.Convert;
-import lombok.RequiredArgsConstructor;
-import lombok.extern.slf4j.Slf4j;
-import org.dromara.common.core.utils.StreamUtils;
-import org.dromara.common.core.utils.StringUtils;
-import org.dromara.common.satoken.utils.LoginHelper;
-import org.dromara.system.api.domain.UserDTO;
-import org.dromara.warm.flow.core.spi.PermissionHandler;
-import org.dromara.workflow.common.ConditionalOnEnable;
-import org.dromara.workflow.service.IFlwTaskAssigneeService;
-import org.springframework.stereotype.Component;
-
-import java.util.Collections;
-import java.util.List;
-
-/**
- * 办理人权限处理器
- *
- * @author AprilWind
- */
-@ConditionalOnEnable
-@RequiredArgsConstructor
-@Component
-@Slf4j
-public class WorkflowPermissionHandler implements PermissionHandler {
-
-    private final IFlwTaskAssigneeService flwTaskAssigneeService;
-
-    /**
-     * 办理人权限标识，比如用户，角色，部门等，用于校验是否有权限办理任务
-     * 后续在流程上下文中获取。
-     * 返回当前用户权限集合
-     *
-     * @return 当前用户权限集合
-     */
-    @Override
-    public List<String> permissions() {
-        return Collections.singletonList(LoginHelper.getUserIdStr());
-    }
-
-    /**
-     * 获取当前办理人
-     *
-     * @return 当前办理人
-     */
-    @Override
-    public String getHandler() {
-        return LoginHelper.getUserIdStr();
-    }
-
-    /**
-     * 将预设办理人转换为实际用户 ID 列表。
-     *
-     * @param permissions 预设权限标识列表
-     * @return 用户 ID 列表
-     */
-    @Override
-    public List<String> convertPermissions(List<String> permissions) {
-        if (CollUtil.isEmpty(permissions)) {
-            return permissions;
-        }
-        String storageIds = CollUtil.join(permissions, StringUtils.SEPARATOR);
-        List<UserDTO> users = flwTaskAssigneeService.fetchUsersByStorageIds(storageIds);
-        return StreamUtils.toList(users, userDTO -> Convert.toStr(userDTO.getUserId()));
-    }
-}
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/IFlwTaskAssigneeService.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/IFlwTaskAssigneeService.java
deleted file mode 100644
index d427b546d..000000000
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/IFlwTaskAssigneeService.java
+++ /dev/null
@@ -1,24 +0,0 @@
-package org.dromara.workflow.service;
-
-import org.dromara.system.api.domain.UserDTO;
-
-import java.util.List;
-
-/**
- * 流程设计器-获取办理人
- *
- * @author AprilWind
- */
-public interface IFlwTaskAssigneeService {
-
-    /**
-     * 批量解析多个存储标识符（storageIds），按类型分类并合并查询用户列表
-     * 输入格式支持多个以逗号分隔的标识（如 "user:123,role:456,789"）
-     * 会自动去重返回结果，非法格式的标识将被忽略
-     *
-     * @param storageIds 多个存储标识符字符串（逗号分隔）
-     * @return 合并后的用户列表，去重后返回，非法格式的标识将被跳过
-     */
-    List<UserDTO> fetchUsersByStorageIds(String storageIds);
-
-}
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskAssigneeServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskAssigneeServiceImpl.java
index 8b6d9612d..8fc5aadc9 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskAssigneeServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskAssigneeServiceImpl.java
@@ -10,11 +10,12 @@ import lombok.extern.slf4j.Slf4j;
 import org.dromara.common.core.utils.DateUtils;
 import org.dromara.common.core.utils.StreamUtils;
 import org.dromara.common.core.utils.StringUtils;
+import org.dromara.common.satoken.utils.LoginHelper;
 import org.dromara.system.api.*;
 import org.dromara.system.api.domain.DeptDTO;
 import org.dromara.system.api.domain.TaskAssigneeDTO;
-import org.dromara.system.api.domain.UserDTO;
 import org.dromara.system.api.model.TaskAssigneeBody;
+import org.dromara.warm.flow.core.spi.PermissionHandler;
 import org.dromara.warm.flow.ui.dto.HandlerFunDto;
 import org.dromara.warm.flow.ui.dto.HandlerQuery;
 import org.dromara.warm.flow.ui.dto.TreeFunDto;
@@ -24,7 +25,6 @@ import org.dromara.warm.flow.ui.vo.HandlerSelectVo;
 import org.dromara.workflow.common.ConditionalOnEnable;
 import org.dromara.workflow.common.enums.TaskAssigneeEnum;
 import org.dromara.workflow.service.IFlwSpelService;
-import org.dromara.workflow.service.IFlwTaskAssigneeService;
 import org.springframework.stereotype.Service;
 
 import java.util.*;
@@ -39,7 +39,7 @@ import java.util.stream.Collectors;
 @Slf4j
 @RequiredArgsConstructor
 @Service
-public class FlwTaskAssigneeServiceImpl implements IFlwTaskAssigneeService, HandlerSelectService {
+public class FlwTaskAssigneeServiceImpl implements PermissionHandler, HandlerSelectService {
 
     private static final String DEFAULT_GROUP_NAME = "默认分组";
 
@@ -50,6 +50,69 @@ public class FlwTaskAssigneeServiceImpl implements IFlwTaskAssigneeService, Hand
     private final PostService postService;
     private final IFlwSpelService spelService;
 
+    /**
+     * 办理人权限标识，比如用户，角色，部门等，用于校验是否有权限办理任务
+     * 后续在流程上下文中获取。
+     * 返回当前用户权限集合
+     *
+     * @return 当前用户权限集合
+     */
+    @Override
+    public List<String> permissions() {
+        return Collections.singletonList(LoginHelper.getUserIdStr());
+    }
+
+    /**
+     * 获取当前办理人
+     *
+     * @return 当前办理人
+     */
+    @Override
+    public String getHandler() {
+        return LoginHelper.getUserIdStr();
+    }
+
+    /**
+     * 将预设办理人转换为实际用户 ID 列表。
+     *
+     * @param permissions 预设权限标识列表
+     * @return 用户 ID 列表
+     */
+    @Override
+    public List<String> convertPermissions(List<String> permissions) {
+        if (CollUtil.isEmpty(permissions)) {
+            return permissions;
+        }
+
+        Map<TaskAssigneeEnum, List<String>> typeIdMap = new EnumMap<>(TaskAssigneeEnum.class);
+        for (String storageId : permissions) {
+            Pair<TaskAssigneeEnum, String> parsed = this.parseStorageId(storageId);
+            if (parsed != null) {
+                typeIdMap.computeIfAbsent(parsed.getKey(), k -> new ArrayList<>()).add(parsed.getValue());
+            }
+        }
+
+        return typeIdMap.entrySet()
+            .stream()
+            .map(entry -> {
+                TaskAssigneeEnum type = entry.getKey();
+                List<Long> longIds = StreamUtils.toList(entry.getValue(), Convert::toLong);
+                return switch (type) {
+                    case USER -> longIds;
+                    case ROLE -> userService.selectUserIdsByRoleIds(longIds);
+                    case DEPT -> userService.selectUserIdsByDeptIds(longIds);
+                    case POST -> userService.selectUserIdsByPostIds(longIds);
+                    default -> Collections.<Long>emptyList();
+                };
+            })
+            .filter(CollUtil::isNotEmpty)
+            .flatMap(Collection::stream)
+            .filter(Objects::nonNull)
+            .distinct()
+            .map(Convert::toStr)
+            .toList();
+    }
+
     /**
      * 获取办理人权限设置列表tabs页签
      *
@@ -192,45 +255,6 @@ public class FlwTaskAssigneeServiceImpl implements IFlwTaskAssigneeService, Hand
             .setCreateTime(assignee -> DateUtils.formatLocalDateTime(assignee.getCreateTime()));
     }
 
-    /**
-     * 批量解析多个存储标识符（storageIds），按类型分类并合并查询用户列表
-     * 输入格式支持多个以逗号分隔的标识（如 "user:123,role:456,789"）
-     * 会自动去重返回结果，非法格式的标识将被忽略
-     *
-     * @param storageIds 多个存储标识符字符串（逗号分隔）
-     * @return 合并后的用户列表，去重后返回，非法格式的标识将被跳过
-     */
-    @Override
-    public List<UserDTO> fetchUsersByStorageIds(String storageIds) {
-        if (StringUtils.isEmpty(storageIds)) {
-            return List.of();
-        }
-        Map<TaskAssigneeEnum, List<String>> typeIdMap = new EnumMap<>(TaskAssigneeEnum.class);
-        for (String storageId : StringUtils.str2List(storageIds, StringUtils.SEPARATOR, true, true)) {
-            Pair<TaskAssigneeEnum, String> parsed = this.parseStorageId(storageId);
-            if (parsed != null) {
-                typeIdMap.computeIfAbsent(parsed.getKey(), k -> new ArrayList<>()).add(parsed.getValue());
-            }
-        }
-        return this.getUsersByTypes(typeIdMap).stream()
-            .distinct()
-            .toList();
-    }
-
-    /**
-     * 按任务分配类型批量查询用户。
-     *
-     * @param typeIdMap 任务分配类型与 id 列表映射
-     * @return 用户列表
-     */
-    private List<UserDTO> getUsersByTypes(Map<TaskAssigneeEnum, List<String>> typeIdMap) {
-        return typeIdMap.entrySet().stream()
-            .map(entry -> this.getUsersByType(entry.getKey(), entry.getValue()))
-            .filter(CollUtil::isNotEmpty)
-            .flatMap(Collection::stream)
-            .toList();
-    }
-
     /**
      * 按任务分配类型批量查询名称映射。
      *
@@ -243,30 +267,6 @@ public class FlwTaskAssigneeServiceImpl implements IFlwTaskAssigneeService, Hand
         return nameMap;
     }
 
-    /**
-     * 根据指定的任务分配类型（TaskAssigneeEnum）和 ID 列表，获取对应的用户信息列表
-     *
-     * @param type 任务分配类型，表示用户、角色、部门或其他（TaskAssigneeEnum 枚举值）
-     * @param ids  与指定分配类型关联的 ID 列表（例如用户ID、角色ID、部门ID等）
-     * @return 返回包含用户信息的列表。如果类型为用户（USER），则通过用户ID列表查询；
-     * 如果类型为角色（ROLE），则通过角色ID列表查询；
-     * 如果类型为部门（DEPT），则通过部门ID列表查询；
-     * 如果类型为岗位（POST）或无法识别的类型，则返回空列表
-     */
-    private List<UserDTO> getUsersByType(TaskAssigneeEnum type, List<String> ids) {
-        if (type == TaskAssigneeEnum.SPEL) {
-            return new ArrayList<>();
-        }
-        List<Long> longIds = StreamUtils.toList(ids, Convert::toLong);
-        return switch (type) {
-            case USER -> userService.selectListByIds(longIds);
-            case ROLE -> userService.selectUsersByRoleIds(longIds);
-            case DEPT -> userService.selectUsersByDeptIds(longIds);
-            case POST -> userService.selectUsersByPostIds(longIds);
-            default -> new ArrayList<>();
-        };
-    }
-
     /**
      * 根据任务分配类型和对应 ID 列表，批量查询名称映射关系
      *
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
index bbda90ed6..686df0393 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwTaskServiceImpl.java
@@ -63,7 +63,6 @@ import org.dromara.workflow.mapper.FlwHisTaskMapper;
 import org.dromara.workflow.mapper.FlwTaskMapper;
 import org.dromara.workflow.service.IFlwCommonService;
 import org.dromara.workflow.service.IFlwNodeExtService;
-import org.dromara.workflow.service.IFlwTaskAssigneeService;
 import org.dromara.workflow.service.IFlwTaskService;
 import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
@@ -105,7 +104,6 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
     private final FlwHisTaskMapper flwHisTaskMapper;
     private final FlwCategoryMapper flwCategoryMapper;
     private final FlowNodeMapper flowNodeMapper;
-    private final IFlwTaskAssigneeService flwTaskAssigneeService;
     private final IFlwCommonService flwCommonService;
     private final IFlwNodeExtService flwNodeExtService;
 
@@ -567,25 +565,20 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
         if (CollUtil.isEmpty(nextNodeList)) {
             return new ArrayList<>();
         }
-        List<FlowNode> nextFlowNodes = BeanUtil.copyToList(nextNodeList, FlowNode.class);
         // 只获取中间节点
-        nextFlowNodes = StreamUtils.filter(nextFlowNodes, node -> NodeType.BETWEEN.getKey().equals(node.getNodeType()));
-        if (CollUtil.isNotEmpty(nextNodeList)) {
-            //构建以下节点数据
-            List<Task> buildNextTaskList = StreamUtils.toList(nextNodeList, node -> taskService.addTask(node, instance
-                , definition, new WorkflowContext(), SkipType.PASS.getKey()));
-            //办理人变量替换
-            ExpressionUtil.evalVariable(buildNextTaskList, mergeVariable, null, false);
-            for (FlowNode flowNode : nextFlowNodes) {
-                StreamUtils.findFirst(buildNextTaskList, t -> t.getNodeCode().equals(flowNode.getNodeCode()))
-                    .ifPresent(first -> {
-                        List<UserDTO> users;
-                        if (CollUtil.isNotEmpty(first.getPermissionList())
-                            && CollUtil.isNotEmpty(users = flwTaskAssigneeService.fetchUsersByStorageIds(StringUtils.joinComma(first.getPermissionList())))) {
-                            flowNode.setPermissionFlag(StreamUtils.join(users, e -> Convert.toStr(e.getUserId())));
-                        }
-                    });
-            }
+        nextNodeList = StreamUtils.filter(nextNodeList, node -> NodeType.BETWEEN.getKey().equals(node.getNodeType()));
+        if (CollUtil.isEmpty(nextNodeList)) {
+            return new ArrayList<>();
+        }
+        List<FlowNode> nextFlowNodes = BeanUtil.copyToList(nextNodeList, FlowNode.class);
+        //构建以下节点数据
+        List<Task> buildNextTaskList = StreamUtils.toList(nextNodeList, node -> taskService.addTask(node, instance
+            , definition, new WorkflowContext(), SkipType.PASS.getKey()));
+        //办理人变量替换
+        ExpressionUtil.evalVariable(buildNextTaskList, mergeVariable, null, false);
+        Map<String, List<String>> map = StreamUtils.toMap(buildNextTaskList, Task::getNodeCode, Task::getPermissionList);
+        for (FlowNode node : nextFlowNodes) {
+            node.setPermissionFlag(StringUtils.joinComma(map.get(node.getNodeCode())));
         }
         return nextFlowNodes;
     }