diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java
index 6f25d725..18e3b490 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/convert/task/BpmTaskConvert.java
@@ -121,7 +121,7 @@ public interface BpmTaskConvert {
                 AdminUserRespDTO startUser = userMap.get(NumberUtils.parseLong(processInstance.getStartUserId()));
                 respVO.setProcessInstance(convert(processInstance, startUser));
             }
-            AdminUserRespDTO assignUser = userMap.get(NumberUtils.parseLong(task.getAssignee()));
+            AdminUserRespDTO assignUser = userMap.get(NumberUtils.parseLong(StrUtil.isEmpty(task.getAssignee())?task.getOwner():task.getAssignee()));
             if (assignUser != null) {
                 respVO.setAssigneeUser(convert3(assignUser));
                 DeptRespDTO dept = deptMap.get(assignUser.getDeptId());
diff --git a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
index e8107e23..0bbde32a 100644
--- a/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
+++ b/yudao-module-bpm/yudao-module-bpm-biz/src/main/java/cn/iocoder/yudao/module/bpm/service/task/BpmTaskServiceImpl.java
@@ -320,7 +320,7 @@ public class BpmTaskServiceImpl implements BpmTaskService {
         // 获得 ProcessInstance Map
         HistoricProcessInstance processInstance = processInstanceService.getHistoricProcessInstance(processInstanceId);
         // 获得 User Map
-        Set<Long> userIds = convertSet(tasks, task -> NumberUtils.parseLong(task.getAssignee()));
+        Set<Long> userIds = convertSet(tasks, task -> NumberUtils.parseLong(StrUtil.isEmpty(task.getAssignee())?task.getOwner():task.getAssignee()));
         userIds.add(NumberUtils.parseLong(processInstance.getStartUserId()));
         Map<Long, AdminUserRespDTO> userMap = adminUserApi.getUserMap(userIds);
         // 获得 Dept Map