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
index 7264ee079..dfeb4df57 100644
--- 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
@@ -15,19 +15,9 @@ public interface IFlwTaskAssigneeService {
      * 根据存储标识符（storageId）解析分配类型和ID，并获取对应的用户列表
      * 支持单个标识（例如 "user:123" 或 "456"），格式非法将返回空列表
      *
-     * @param storageId 包含分配类型和ID的字符串
+     * @param storageIds 包含分配类型和ID的字符串
      * @return 匹配的用户列表，格式非法返回空列表
      */
-    List<UserDTO> fetchUsersByStorageId(String storageId);
-
-    /**
-     * 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(List<String> storageIds);
+    List<UserDTO> fetchUsersByStorageIds(String storageIds);
 
 }
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwCommonServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwCommonServiceImpl.java
index 35434d389..8e9c5096c 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwCommonServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwCommonServiceImpl.java
@@ -72,11 +72,8 @@ public class FlwCommonServiceImpl implements IFlwCommonService {
         IFlwTaskAssigneeService taskAssigneeService = SpringUtils.getBean(IFlwTaskAssigneeService.class);
         Map<String, List<User>> userListMap = StreamUtils.groupByKey(userList, User::getType);
         for (Map.Entry<String, List<User>> entry : userListMap.entrySet()) {
-            List<String> processedBys = entry.getValue().stream()
-                .map(User::getProcessedBy)
-                .filter(StringUtils::isNotBlank)
-                .distinct()
-                .collect(Collectors.toList());
+            List<User> entryValue = entry.getValue();
+            String processedBys = StreamUtils.join(entryValue, User::getProcessedBy);
             // 根据 processedBy 前缀判断处理人类型，分别获取用户列表
             List<UserDTO> users = taskAssigneeService.fetchUsersByStorageIds(processedBys);
             // 转换为 FlowUser 并添加到结果集合
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 9f847e184..5ebf2bbeb 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
@@ -169,33 +169,16 @@ public class FlwTaskAssigneeServiceImpl implements IFlwTaskAssigneeService, Hand
      * 根据存储标识符（storageId）解析分配类型和ID，并获取对应的用户列表
      * 支持单个标识（例如 "user:123" 或 "456"），格式非法将返回空列表
      *
-     * @param storageId 包含分配类型和ID的字符串
+     * @param storageIds 包含分配类型和ID的字符串
      * @return 匹配的用户列表，格式非法返回空列表
      */
     @Override
-    public List<UserDTO> fetchUsersByStorageId(String storageId) {
-        Pair<TaskAssigneeEnum, Long> parsed = this.parseStorageId(storageId);
-        if (parsed == null) {
-            return List.of();
-        }
-        return this.getUsersByType(parsed.getKey(), Collections.singletonList(parsed.getValue()));
-    }
-
-    /**
-     * 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(List<String> storageIds) {
-        if (CollUtil.isEmpty(storageIds)) {
+    public List<UserDTO> fetchUsersByStorageIds(String storageIds) {
+        if (StringUtils.isEmpty(storageIds)) {
             return List.of();
         }
         Map<TaskAssigneeEnum, List<Long>> typeIdMap = new EnumMap<>(TaskAssigneeEnum.class);
-        for (String storageId : storageIds) {
+        for (String storageId : storageIds.split(StringUtils.SEPARATOR)) {
             Pair<TaskAssigneeEnum, Long> parsed = this.parseStorageId(storageId);
             if (parsed != null) {
                 typeIdMap.computeIfAbsent(parsed.getKey(), k -> new ArrayList<>()).add(parsed.getValue());
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 4bc0b0878..0cdabbf4a 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
@@ -600,7 +600,7 @@ public class FlwTaskServiceImpl implements IFlwTaskService {
             for (FlowNode flowNode : nextFlowNodes) {
                 buildNextTaskList.stream().filter(t -> t.getNodeCode().equals(flowNode.getNodeCode())).findFirst().ifPresent(t -> {
                     if (CollUtil.isNotEmpty(t.getPermissionList())) {
-                        List<UserDTO> users = flwTaskAssigneeService.fetchUsersByStorageIds(t.getPermissionList());
+                        List<UserDTO> users = flwTaskAssigneeService.fetchUsersByStorageIds(String.join(StringUtils.SEPARATOR, t.getPermissionList()));
                         if (CollUtil.isNotEmpty(users)) {
                             flowNode.setPermissionFlag(StreamUtils.join(users, e -> String.valueOf(e.getUserId())));
                         }