diff --git a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/BatchDeviceDto.java b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/BatchDeviceDto.java
index 9bedec4..527ccf4 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/BatchDeviceDto.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/BatchDeviceDto.java
@@ -60,6 +60,11 @@ public class BatchDeviceDto {
     /**
      * 图标
      */
-    public String icon;
+    public String iconId;
+
+    /**
+     * 预览图
+     */
+    public String previewId;
 
 }
diff --git a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceDto.java b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceDto.java
index 21929c6..9a7d190 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceDto.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceDto.java
@@ -57,6 +57,11 @@ public class DeviceDto {
     /**
      * 图标
      */
-    public String icon;
+    public String iconId;
+
+    /**
+     * 预览图
+     */
+    public String previewId;
 
 }
diff --git a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceServeDto.java b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceServeDto.java
index bb693c7..09187ed 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceServeDto.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/iot/device/dto/DeviceServeDto.java
@@ -38,7 +38,12 @@ public class DeviceServeDto {
     /**
      * 图标
      */
-    public String icon;
+    public String iconId;
+
+    /**
+     * 预览图
+     */
+    public String previewId;
 
     /**
      * 参数
diff --git a/src/main/java/com/zsc/edu/gateway/modules/iot/device/entity/Device.java b/src/main/java/com/zsc/edu/gateway/modules/iot/device/entity/Device.java
index b29d17c..a5aa5e4 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/iot/device/entity/Device.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/iot/device/entity/Device.java
@@ -6,6 +6,7 @@ import com.baomidou.mybatisplus.annotation.TableField;
 import com.baomidou.mybatisplus.annotation.TableName;
 import com.zsc.edu.gateway.common.enums.IState;
 import com.zsc.edu.gateway.framework.json.JsonbTypeHandler;
+import com.zsc.edu.gateway.modules.attachment.entity.Attachment;
 import com.zsc.edu.gateway.modules.iot.product.entity.Product;
 import com.zsc.edu.gateway.modules.system.entity.BaseEntity;
 import lombok.AllArgsConstructor;
@@ -109,10 +110,26 @@ public class Device extends BaseEntity {
     public Double latitude;
 
     /**
-     * 设备图标
+     * 设备图标附件ID
      */
-    public String icon;
+    public String iconId;
 
+    /**
+     * 设备图标附件
+     */
+    @TableField(exist = false)
+    public Attachment icon;
+
+    /**
+     * 设备预览图附件ID
+     */
+    public String previewId;
+
+    /**
+     * 设备预览图附件
+     */
+    @TableField(exist = false)
+    public Attachment preview;
 
     public enum Status implements IEnum<Integer>, IState<Status> {
         UNACTIVATED(0, "未激活"),
diff --git a/src/main/java/com/zsc/edu/gateway/modules/iot/device/vo/DeviceVo.java b/src/main/java/com/zsc/edu/gateway/modules/iot/device/vo/DeviceVo.java
index 618af75..28907c6 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/iot/device/vo/DeviceVo.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/iot/device/vo/DeviceVo.java
@@ -3,6 +3,7 @@ package com.zsc.edu.gateway.modules.iot.device.vo;
 import com.baomidou.mybatisplus.annotation.TableField;
 import com.fasterxml.jackson.annotation.JsonInclude;
 import com.zsc.edu.gateway.framework.json.JsonbTypeHandler;
+import com.zsc.edu.gateway.modules.attachment.entity.Attachment;
 import com.zsc.edu.gateway.modules.iot.device.entity.Device;
 import com.zsc.edu.gateway.modules.iot.product.entity.Product;
 import com.zsc.edu.gateway.modules.iot.tsl.entity.Param;
@@ -107,9 +108,24 @@ public class DeviceVo {
     public Double latitude;
 
     /**
-     * 设备图标
+     * 设备图标附件ID
      */
-    public String icon;
+    public String iconId;
+
+    /**
+     * 设备图标附件
+     */
+    public Attachment icon;
+
+    /**
+     * 设备预览图附件ID
+     */
+    public String previewId;
+
+    /**
+     * 设备预览图附件
+     */
+    public Attachment preview;
 
 
     /**
diff --git a/src/main/java/com/zsc/edu/gateway/modules/message/service/impl/BulletinServiceImpl.java b/src/main/java/com/zsc/edu/gateway/modules/message/service/impl/BulletinServiceImpl.java
index fb218c8..9151d13 100644
--- a/src/main/java/com/zsc/edu/gateway/modules/message/service/impl/BulletinServiceImpl.java
+++ b/src/main/java/com/zsc/edu/gateway/modules/message/service/impl/BulletinServiceImpl.java
@@ -36,7 +36,6 @@ public class BulletinServiceImpl extends ServiceImpl<BulletinRepository, Bulleti
 
     private final BulletinMapper mapper;
     private final BulletinRepository repo;
-    private final UserRepository userRepository;
     private final BulletinAttachmentRepository bulletinAttachmentRepository;
     /**
      * 查询公告详情
diff --git a/src/main/resources/mappers/iot/DeviceMapper.xml b/src/main/resources/mappers/iot/DeviceMapper.xml
index bb844d6..a81522a 100644
--- a/src/main/resources/mappers/iot/DeviceMapper.xml
+++ b/src/main/resources/mappers/iot/DeviceMapper.xml
@@ -24,7 +24,8 @@
         <result column="remark" jdbcType="VARCHAR" property="deviceRemark"/>
         <result column="longitude" jdbcType="DOUBLE" property="longitude"/>
         <result column="latitude" jdbcType="DOUBLE" property="latitude"/>
-        <result column="icon" jdbcType="VARCHAR" property="icon"/>
+        <result column="icon_id" jdbcType="VARCHAR" property="iconId"/>
+        <result column="preview_id" jdbcType="VARCHAR" property="previewId"/>
         <result column="name" property="productName"/>
         <result column="product_type" jdbcType="VARCHAR" property="productType"/>
         <result column="model" property="model"/>
@@ -35,6 +36,18 @@
         <result column="update_time" jdbcType="DATE" property="updateTime"/>
         <result column="remark" jdbcType="VARCHAR" property="remark"/>
         <result column="enabled" jdbcType="BOOLEAN" property="enabled"/>
+        <association property="icon" javaType="com.zsc.edu.gateway.modules.attachment.entity.Attachment"
+                     autoMapping="true"
+                     columnPrefix="icon_">
+            <id column="id" property="id"/>
+            <result column="file_name" property="fileName"/>
+        </association>
+        <association property="preview" javaType="com.zsc.edu.gateway.modules.attachment.entity.Attachment"
+                     autoMapping="true"
+                     columnPrefix="preview_">
+            <id column="id" property="id"/>
+            <result column="file_name" property="fileName"/>
+        </association>
         <collection property="params" ofType="com.zsc.edu.gateway.modules.iot.tsl.entity.Param" autoMapping="true"
                     columnPrefix="param_">
             <id column="id" property="id"/>
@@ -56,10 +69,16 @@
                ip.type       as param_type,
                ip.identifier as param_identifier,
                ip.name       as param_name,
-               ip.remark     as param_remark
+               ip.remark    as param_remark,
+               ai.id        as icon_id,
+               ai.file_name as icon_file_name,
+               ap.file_name as preview_file_name,
+               ap.id        as preview_id
         from iot_device d
         left join iot_product p on d.product_id = p.id
         left join iot_param ip on p.id = ip.foreign_id and ip.foreign_type = 3
+        left join attachment ai on d.icon_id = ai.id
+        left join attachment ap on d.preview_id = ap.id
         where d.id = #{id}
     </select>
 
diff --git a/src/main/resources/mappers/notice/BulletinMapper.xml b/src/main/resources/mappers/notice/BulletinMapper.xml
index 6ccc7ce..a7396e0 100644
--- a/src/main/resources/mappers/notice/BulletinMapper.xml
+++ b/src/main/resources/mappers/notice/BulletinMapper.xml
@@ -25,8 +25,8 @@
         <result column="remark" jdbcType="VARCHAR" property="remark"/>
         <collection property="attachments" ofType="com.zsc.edu.gateway.modules.attachment.entity.Attachment"
                     autoMapping="true" columnPrefix="attachment_">
-            <id column="id" jdbcType="VARCHAR" property="id"/>
-            <result column="file_name" jdbcType="VARCHAR" property="fileName"/>
+            <id column="id" property="id"/>
+            <result column="file_name" property="fileName"/>
         </collection>
     </resultMap>
     <select id="selectByBulletinId" resultMap="BulletinMap">
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