diff --git a/doc/tduck.sql b/doc/tduck.sql
index a34fec0..3a50e8a 100644
--- a/doc/tduck.sql
+++ b/doc/tduck.sql
@@ -103,6 +103,7 @@ CREATE TABLE `pr_project_template_item`  (
   `required` tinyint(1) NOT NULL COMMENT '是否必填',
   `placeholder` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL COMMENT '输入型提示文字',
   `sort` bigint(20) NULL DEFAULT 0 COMMENT '排序',
+  `span` int(10) NOT NULL DEFAULT '24' COMMENT '栅格宽度',
   `expand` json NULL COMMENT '扩展字段 表单项独有字段',
   `reg_list` json NULL COMMENT '正则表达式 ',
   `update_time` datetime(0) NULL DEFAULT CURRENT_TIMESTAMP(0) COMMENT '更新时间',
diff --git a/tduck-project/src/main/java/com/tduck/cloud/project/entity/UserProjectItemEntity.java b/tduck-project/src/main/java/com/tduck/cloud/project/entity/UserProjectItemEntity.java
index e432000..5e6a299 100644
--- a/tduck-project/src/main/java/com/tduck/cloud/project/entity/UserProjectItemEntity.java
+++ b/tduck-project/src/main/java/com/tduck/cloud/project/entity/UserProjectItemEntity.java
@@ -67,6 +67,12 @@ public class UserProjectItemEntity extends BaseEntity<UserProjectItemEntity> {
      * 排序
      */
     private Long sort;
+
+    /**
+     * 栅格宽度
+     */
+    private int span;
+
     /**
      * 扩展字段 表单项独有字段
      */
diff --git a/tduck-project/src/main/java/com/tduck/cloud/project/request/OperateProjectItemRequest.java b/tduck-project/src/main/java/com/tduck/cloud/project/request/OperateProjectItemRequest.java
index d9665d5..f1f1612 100644
--- a/tduck-project/src/main/java/com/tduck/cloud/project/request/OperateProjectItemRequest.java
+++ b/tduck-project/src/main/java/com/tduck/cloud/project/request/OperateProjectItemRequest.java
@@ -59,6 +59,11 @@ public class OperateProjectItemRequest {
      * 排序
      */
     private Integer sort;
+    /**
+     * 栅格宽度
+     */
+    private String span;
+
     /**
      * 扩展字段 表单项独有字段
      */
diff --git a/tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultEntityImpl.java b/tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultServiceImpl.java
similarity index 92%
rename from tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultEntityImpl.java
rename to tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultServiceImpl.java
index 13d66aa..84c1bb9 100644
--- a/tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultEntityImpl.java
+++ b/tduck-project/src/main/java/com/tduck/cloud/project/service/impl/UserProjectResultServiceImpl.java
@@ -2,6 +2,7 @@ package com.tduck.cloud.project.service.impl;
 
 import cn.hutool.core.bean.BeanUtil;
 import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.collection.CollectionUtil;
 import cn.hutool.core.map.MapUtil;
 import cn.hutool.core.util.ObjectUtil;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
@@ -12,6 +13,7 @@ import com.google.common.collect.Lists;
 import com.google.common.collect.Sets;
 import com.tduck.cloud.common.constant.CommonConstants;
 import com.tduck.cloud.common.entity.BaseEntity;
+import com.tduck.cloud.common.exception.BaseException;
 import com.tduck.cloud.common.util.AddressUtils;
 import com.tduck.cloud.common.util.RedisUtils;
 import com.tduck.cloud.project.entity.UserProjectItemEntity;
@@ -38,7 +40,7 @@ import static com.tduck.cloud.project.constant.ProjectRedisKeyConstants.PROJECT_
  */
 @Service("projectResultService")
 @RequiredArgsConstructor
-public class UserProjectResultEntityImpl extends ServiceImpl<UserProjectResultMapper, UserProjectResultEntity> implements UserProjectResultService {
+public class UserProjectResultServiceImpl extends ServiceImpl<UserProjectResultMapper, UserProjectResultEntity> implements UserProjectResultService {
 
     private final UserProjectItemService userProjectItemService;
     private final RedisUtils redisUtils;
@@ -84,6 +86,9 @@ public class UserProjectResultEntityImpl extends ServiceImpl<UserProjectResultMa
                 .le(ObjectUtil.isNotNull(request.getEndDateTime()), UserProjectResultEntity::getCreateTime, request.getEndDateTime())
                 .ge(ObjectUtil.isNotNull(request.getBeginDateTime()), UserProjectResultEntity::getCreateTime, request.getBeginDateTime())
                 .orderByDesc(BaseEntity::getCreateTime));
+        if (CollectionUtil.isEmpty(resultEntityList)) {
+            throw new BaseException("此表单无有效反馈，不能导出");
+        }
         List<Map<String, Object>> resultList = resultEntityList.stream().map(item -> {
             Map<String, Object> processData = item.getProcessData();
             processData.put(BaseEntity.Fields.createTime, item.getCreateTime());