diff --git a/backend/src/main/java/com/designhub/service/TaskService.java b/backend/src/main/java/com/designhub/service/TaskService.java
index 80b8c4f..fc8495e 100644
--- a/backend/src/main/java/com/designhub/service/TaskService.java
+++ b/backend/src/main/java/com/designhub/service/TaskService.java
@@ -332,10 +332,17 @@ public class TaskService {
         // 设置发布类型（从前端传递，默认为recruitment）
         task.setReleaseType(dto.getReleaseType() != null ? dto.getReleaseType() : "recruitment");
         // 如果是assigned模式，设置接收人
-        if ("assigned".equals(dto.getReleaseType()) && dto.getReceiverId() != null) {
-            task.setReceiverId(dto.getReceiverId());
+        // 对于流水线任务，如果主任务receiverId为空，从第一个子任务获取
+        Long mainReceiverId = dto.getReceiverId();
+        if ("assigned".equals(dto.getReleaseType()) && mainReceiverId == null && dto.getItems() != null && !dto.getItems().isEmpty()) {
+            // 从第一个子任务获取指定的设计师
+            mainReceiverId = dto.getItems().get(0).getReceiverId();
+            log.info("流水线任务assigned模式，从第一个子任务获取receiverId: {}", mainReceiverId);
+        }
+        if ("assigned".equals(dto.getReleaseType()) && mainReceiverId != null) {
+            task.setReceiverId(mainReceiverId);
             // 获取接收人的部门ID
-            User receiver = userService.getUserById(dto.getReceiverId());
+            User receiver = userService.getUserById(mainReceiverId);
             if (receiver != null && receiver.getDeptId() != null) {
                 task.setReceiverDeptId(receiver.getDeptId());
             }
@@ -476,6 +483,19 @@ public class TaskService {
             item.setEstimatedHours(groupTotalHours);
             item.setSortOrder(itemIndex);
             item.setProgress(0);
+            
+            // 如果是assigned模式，设置子任务的接收人（从该组的第一个任务项获取）
+            if ("assigned".equals(dto.getReleaseType()) && !groupItems.isEmpty()) {
+                Long itemReceiverId = groupItems.get(0).getReceiverId();
+                if (itemReceiverId != null) {
+                    item.setReceiverId(itemReceiverId);
+                    User itemReceiver = userService.getUserById(itemReceiverId);
+                    if (itemReceiver != null && itemReceiver.getDeptId() != null) {
+                        item.setReceiverDeptId(itemReceiver.getDeptId());
+                    }
+                    log.info("子任务组 {} 已预先指定设计师: {}", groupNo, itemReceiverId);
+                }
+            }
 
             // 关键：根据流水线模式和分组设置初始状态
             if ("sequential".equals(dto.getPipelineMode())) {