diff --git a/backend/src/main/java/com/designhub/service/TaskItemService.java b/backend/src/main/java/com/designhub/service/TaskItemService.java
index 49189b1..6082e7f 100644
--- a/backend/src/main/java/com/designhub/service/TaskItemService.java
+++ b/backend/src/main/java/com/designhub/service/TaskItemService.java
@@ -300,7 +300,10 @@ public class TaskItemService {
             try {
                 downloadUrl = externalAssetService.checkTaskCompletion(taskNo);
             } catch (Exception e) {
-                log.warn("调用第三方素材API失败", e);
+                log.warn("调用第三方素材API失败: {}", e.getMessage());
+                // API调用失败时，提示用户
+                throw new BusinessException(ResultCode.ERROR, 
+                    "素材API验证失败，请稍后重试或联系管理员");
             }
             
             if (downloadUrl == null) {
@@ -311,9 +314,11 @@ public class TaskItemService {
             
             log.info("第三方素材API返回下载链接: {}", downloadUrl);
         } else {
-            // 未启用第三方API，使用传统方式（需要传入deliveryPath）
-            if (deliveryPath == null || deliveryPath.trim().isEmpty()) {
-                throw new BusinessException(ResultCode.ERROR, "交付路径不能为空");
+            // 未启用第三方API，允许直接完结任务
+            log.info("第三方素材API未启用，直接完结任务: itemId={}", itemId);
+            // 如果有传入deliveryPath，则使用它
+            if (deliveryPath != null && !deliveryPath.trim().isEmpty()) {
+                downloadUrl = deliveryPath;
             }
         }