diff --git a/ktg-admin/src/main/java/com/ktg/web/controller/system/SysAttachmentController.java b/ktg-admin/src/main/java/com/ktg/web/controller/system/SysAttachmentController.java
new file mode 100644
index 0000000..d19b5ae
--- /dev/null
+++ b/ktg-admin/src/main/java/com/ktg/web/controller/system/SysAttachmentController.java
@@ -0,0 +1,104 @@
+package com.ktg.web.controller.system;
+
+import java.util.List;
+import javax.servlet.http.HttpServletResponse;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.PutMapping;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+import com.ktg.common.annotation.Log;
+import com.ktg.common.core.controller.BaseController;
+import com.ktg.common.core.domain.AjaxResult;
+import com.ktg.common.enums.BusinessType;
+import com.ktg.system.domain.SysAttachment;
+import com.ktg.system.service.ISysAttachmentService;
+import com.ktg.common.utils.poi.ExcelUtil;
+import com.ktg.common.core.page.TableDataInfo;
+
+/**
+ * 附件Controller
+ * 
+ * @author yinjinlu
+ * @date 2022-07-26
+ */
+@RestController
+@RequestMapping("/system/attachment")
+public class SysAttachmentController extends BaseController
+{
+    @Autowired
+    private ISysAttachmentService sysAttachmentService;
+
+    /**
+     * 查询附件列表
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:list')")
+    @GetMapping("/list")
+    public TableDataInfo list(SysAttachment sysAttachment)
+    {
+        startPage();
+        List<SysAttachment> list = sysAttachmentService.selectSysAttachmentList(sysAttachment);
+        return getDataTable(list);
+    }
+
+    /**
+     * 导出附件列表
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:export')")
+    @Log(title = "附件", businessType = BusinessType.EXPORT)
+    @PostMapping("/export")
+    public void export(HttpServletResponse response, SysAttachment sysAttachment)
+    {
+        List<SysAttachment> list = sysAttachmentService.selectSysAttachmentList(sysAttachment);
+        ExcelUtil<SysAttachment> util = new ExcelUtil<SysAttachment>(SysAttachment.class);
+        util.exportExcel(response, list, "附件数据");
+    }
+
+    /**
+     * 获取附件详细信息
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:query')")
+    @GetMapping(value = "/{attachmentId}")
+    public AjaxResult getInfo(@PathVariable("attachmentId") Long attachmentId)
+    {
+        return AjaxResult.success(sysAttachmentService.selectSysAttachmentByAttachmentId(attachmentId));
+    }
+
+    /**
+     * 新增附件
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:add')")
+    @Log(title = "附件", businessType = BusinessType.INSERT)
+    @PostMapping
+    public AjaxResult add(@RequestBody SysAttachment sysAttachment)
+    {
+        return toAjax(sysAttachmentService.insertSysAttachment(sysAttachment));
+    }
+
+    /**
+     * 修改附件
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:edit')")
+    @Log(title = "附件", businessType = BusinessType.UPDATE)
+    @PutMapping
+    public AjaxResult edit(@RequestBody SysAttachment sysAttachment)
+    {
+        return toAjax(sysAttachmentService.updateSysAttachment(sysAttachment));
+    }
+
+    /**
+     * 删除附件
+     */
+    @PreAuthorize("@ss.hasPermi('system:attachment:remove')")
+    @Log(title = "附件", businessType = BusinessType.DELETE)
+	@DeleteMapping("/{attachmentIds}")
+    public AjaxResult remove(@PathVariable Long[] attachmentIds)
+    {
+        return toAjax(sysAttachmentService.deleteSysAttachmentByAttachmentIds(attachmentIds));
+    }
+}
diff --git a/ktg-system/src/main/java/com/ktg/system/domain/SysAttachment.java b/ktg-system/src/main/java/com/ktg/system/domain/SysAttachment.java
new file mode 100644
index 0000000..1bc8f90
--- /dev/null
+++ b/ktg-system/src/main/java/com/ktg/system/domain/SysAttachment.java
@@ -0,0 +1,207 @@
+package com.ktg.system.domain;
+
+import java.math.BigDecimal;
+import org.apache.commons.lang3.builder.ToStringBuilder;
+import org.apache.commons.lang3.builder.ToStringStyle;
+import com.ktg.common.annotation.Excel;
+import com.ktg.common.core.domain.BaseEntity;
+
+/**
+ * 附件对象 sys_attachment
+ * 
+ * @author yinjinlu
+ * @date 2022-07-26
+ */
+public class SysAttachment extends BaseEntity
+{
+    private static final long serialVersionUID = 1L;
+
+    /** 附件ID */
+    private Long attachmentId;
+
+    /** 关联的业务单据ID */
+    @Excel(name = "关联的业务单据ID")
+    private Long sourceDocId;
+
+    /** 业务单据类型 */
+    @Excel(name = "业务单据类型")
+    private String sourceDocType;
+
+    /** 访问URL */
+    @Excel(name = "访问URL")
+    private String fileUrl;
+
+    /** 域名 */
+    @Excel(name = "域名")
+    private String basePath;
+
+    /** 文件名 */
+    @Excel(name = "文件名")
+    private String fileName;
+
+    /** 原来的文件名 */
+    @Excel(name = "原来的文件名")
+    private String orignalName;
+
+    /** 文件类型 */
+    @Excel(name = "文件类型")
+    private String fileType;
+
+    /** 文件大小 */
+    @Excel(name = "文件大小")
+    private BigDecimal fileSize;
+
+    /** 预留字段1 */
+    private String attr1;
+
+    /** 预留字段2 */
+    private String attr2;
+
+    /** 预留字段3 */
+    private Long attr3;
+
+    /** 预留字段4 */
+    private Long attr4;
+
+    public void setAttachmentId(Long attachmentId) 
+    {
+        this.attachmentId = attachmentId;
+    }
+
+    public Long getAttachmentId() 
+    {
+        return attachmentId;
+    }
+    public void setSourceDocId(Long sourceDocId) 
+    {
+        this.sourceDocId = sourceDocId;
+    }
+
+    public Long getSourceDocId() 
+    {
+        return sourceDocId;
+    }
+    public void setSourceDocType(String sourceDocType) 
+    {
+        this.sourceDocType = sourceDocType;
+    }
+
+    public String getSourceDocType() 
+    {
+        return sourceDocType;
+    }
+    public void setFileUrl(String fileUrl) 
+    {
+        this.fileUrl = fileUrl;
+    }
+
+    public String getFileUrl() 
+    {
+        return fileUrl;
+    }
+    public void setBasePath(String basePath) 
+    {
+        this.basePath = basePath;
+    }
+
+    public String getBasePath() 
+    {
+        return basePath;
+    }
+    public void setFileName(String fileName) 
+    {
+        this.fileName = fileName;
+    }
+
+    public String getFileName() 
+    {
+        return fileName;
+    }
+    public void setOrignalName(String orignalName) 
+    {
+        this.orignalName = orignalName;
+    }
+
+    public String getOrignalName() 
+    {
+        return orignalName;
+    }
+    public void setFileType(String fileType) 
+    {
+        this.fileType = fileType;
+    }
+
+    public String getFileType() 
+    {
+        return fileType;
+    }
+    public void setFileSize(BigDecimal fileSize) 
+    {
+        this.fileSize = fileSize;
+    }
+
+    public BigDecimal getFileSize() 
+    {
+        return fileSize;
+    }
+    public void setAttr1(String attr1) 
+    {
+        this.attr1 = attr1;
+    }
+
+    public String getAttr1() 
+    {
+        return attr1;
+    }
+    public void setAttr2(String attr2) 
+    {
+        this.attr2 = attr2;
+    }
+
+    public String getAttr2() 
+    {
+        return attr2;
+    }
+    public void setAttr3(Long attr3) 
+    {
+        this.attr3 = attr3;
+    }
+
+    public Long getAttr3() 
+    {
+        return attr3;
+    }
+    public void setAttr4(Long attr4) 
+    {
+        this.attr4 = attr4;
+    }
+
+    public Long getAttr4() 
+    {
+        return attr4;
+    }
+
+    @Override
+    public String toString() {
+        return new ToStringBuilder(this,ToStringStyle.MULTI_LINE_STYLE)
+            .append("attachmentId", getAttachmentId())
+            .append("sourceDocId", getSourceDocId())
+            .append("sourceDocType", getSourceDocType())
+            .append("fileUrl", getFileUrl())
+            .append("basePath", getBasePath())
+            .append("fileName", getFileName())
+            .append("orignalName", getOrignalName())
+            .append("fileType", getFileType())
+            .append("fileSize", getFileSize())
+            .append("remark", getRemark())
+            .append("attr1", getAttr1())
+            .append("attr2", getAttr2())
+            .append("attr3", getAttr3())
+            .append("attr4", getAttr4())
+            .append("createBy", getCreateBy())
+            .append("createTime", getCreateTime())
+            .append("updateBy", getUpdateBy())
+            .append("updateTime", getUpdateTime())
+            .toString();
+    }
+}
diff --git a/ktg-system/src/main/java/com/ktg/system/mapper/SysAttachmentMapper.java b/ktg-system/src/main/java/com/ktg/system/mapper/SysAttachmentMapper.java
new file mode 100644
index 0000000..f112c9e
--- /dev/null
+++ b/ktg-system/src/main/java/com/ktg/system/mapper/SysAttachmentMapper.java
@@ -0,0 +1,61 @@
+package com.ktg.system.mapper;
+
+import java.util.List;
+import com.ktg.system.domain.SysAttachment;
+
+/**
+ * 附件Mapper接口
+ * 
+ * @author yinjinlu
+ * @date 2022-07-26
+ */
+public interface SysAttachmentMapper 
+{
+    /**
+     * 查询附件
+     * 
+     * @param attachmentId 附件主键
+     * @return 附件
+     */
+    public SysAttachment selectSysAttachmentByAttachmentId(Long attachmentId);
+
+    /**
+     * 查询附件列表
+     * 
+     * @param sysAttachment 附件
+     * @return 附件集合
+     */
+    public List<SysAttachment> selectSysAttachmentList(SysAttachment sysAttachment);
+
+    /**
+     * 新增附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    public int insertSysAttachment(SysAttachment sysAttachment);
+
+    /**
+     * 修改附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    public int updateSysAttachment(SysAttachment sysAttachment);
+
+    /**
+     * 删除附件
+     * 
+     * @param attachmentId 附件主键
+     * @return 结果
+     */
+    public int deleteSysAttachmentByAttachmentId(Long attachmentId);
+
+    /**
+     * 批量删除附件
+     * 
+     * @param attachmentIds 需要删除的数据主键集合
+     * @return 结果
+     */
+    public int deleteSysAttachmentByAttachmentIds(Long[] attachmentIds);
+}
diff --git a/ktg-system/src/main/java/com/ktg/system/service/ISysAttachmentService.java b/ktg-system/src/main/java/com/ktg/system/service/ISysAttachmentService.java
new file mode 100644
index 0000000..1e6501d
--- /dev/null
+++ b/ktg-system/src/main/java/com/ktg/system/service/ISysAttachmentService.java
@@ -0,0 +1,61 @@
+package com.ktg.system.service;
+
+import java.util.List;
+import com.ktg.system.domain.SysAttachment;
+
+/**
+ * 附件Service接口
+ * 
+ * @author yinjinlu
+ * @date 2022-07-26
+ */
+public interface ISysAttachmentService 
+{
+    /**
+     * 查询附件
+     * 
+     * @param attachmentId 附件主键
+     * @return 附件
+     */
+    public SysAttachment selectSysAttachmentByAttachmentId(Long attachmentId);
+
+    /**
+     * 查询附件列表
+     * 
+     * @param sysAttachment 附件
+     * @return 附件集合
+     */
+    public List<SysAttachment> selectSysAttachmentList(SysAttachment sysAttachment);
+
+    /**
+     * 新增附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    public int insertSysAttachment(SysAttachment sysAttachment);
+
+    /**
+     * 修改附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    public int updateSysAttachment(SysAttachment sysAttachment);
+
+    /**
+     * 批量删除附件
+     * 
+     * @param attachmentIds 需要删除的附件主键集合
+     * @return 结果
+     */
+    public int deleteSysAttachmentByAttachmentIds(Long[] attachmentIds);
+
+    /**
+     * 删除附件信息
+     * 
+     * @param attachmentId 附件主键
+     * @return 结果
+     */
+    public int deleteSysAttachmentByAttachmentId(Long attachmentId);
+}
diff --git a/ktg-system/src/main/java/com/ktg/system/service/impl/SysAttachmentServiceImpl.java b/ktg-system/src/main/java/com/ktg/system/service/impl/SysAttachmentServiceImpl.java
new file mode 100644
index 0000000..8fbe5b0
--- /dev/null
+++ b/ktg-system/src/main/java/com/ktg/system/service/impl/SysAttachmentServiceImpl.java
@@ -0,0 +1,96 @@
+package com.ktg.system.service.impl;
+
+import java.util.List;
+import com.ktg.common.utils.DateUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import com.ktg.system.mapper.SysAttachmentMapper;
+import com.ktg.system.domain.SysAttachment;
+import com.ktg.system.service.ISysAttachmentService;
+
+/**
+ * 附件Service业务层处理
+ * 
+ * @author yinjinlu
+ * @date 2022-07-26
+ */
+@Service
+public class SysAttachmentServiceImpl implements ISysAttachmentService 
+{
+    @Autowired
+    private SysAttachmentMapper sysAttachmentMapper;
+
+    /**
+     * 查询附件
+     * 
+     * @param attachmentId 附件主键
+     * @return 附件
+     */
+    @Override
+    public SysAttachment selectSysAttachmentByAttachmentId(Long attachmentId)
+    {
+        return sysAttachmentMapper.selectSysAttachmentByAttachmentId(attachmentId);
+    }
+
+    /**
+     * 查询附件列表
+     * 
+     * @param sysAttachment 附件
+     * @return 附件
+     */
+    @Override
+    public List<SysAttachment> selectSysAttachmentList(SysAttachment sysAttachment)
+    {
+        return sysAttachmentMapper.selectSysAttachmentList(sysAttachment);
+    }
+
+    /**
+     * 新增附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    @Override
+    public int insertSysAttachment(SysAttachment sysAttachment)
+    {
+        sysAttachment.setCreateTime(DateUtils.getNowDate());
+        return sysAttachmentMapper.insertSysAttachment(sysAttachment);
+    }
+
+    /**
+     * 修改附件
+     * 
+     * @param sysAttachment 附件
+     * @return 结果
+     */
+    @Override
+    public int updateSysAttachment(SysAttachment sysAttachment)
+    {
+        sysAttachment.setUpdateTime(DateUtils.getNowDate());
+        return sysAttachmentMapper.updateSysAttachment(sysAttachment);
+    }
+
+    /**
+     * 批量删除附件
+     * 
+     * @param attachmentIds 需要删除的附件主键
+     * @return 结果
+     */
+    @Override
+    public int deleteSysAttachmentByAttachmentIds(Long[] attachmentIds)
+    {
+        return sysAttachmentMapper.deleteSysAttachmentByAttachmentIds(attachmentIds);
+    }
+
+    /**
+     * 删除附件信息
+     * 
+     * @param attachmentId 附件主键
+     * @return 结果
+     */
+    @Override
+    public int deleteSysAttachmentByAttachmentId(Long attachmentId)
+    {
+        return sysAttachmentMapper.deleteSysAttachmentByAttachmentId(attachmentId);
+    }
+}
diff --git a/ktg-system/src/main/resources/mapper/system/SysAttachmentMapper.xml b/ktg-system/src/main/resources/mapper/system/SysAttachmentMapper.xml
new file mode 100644
index 0000000..5fab075
--- /dev/null
+++ b/ktg-system/src/main/resources/mapper/system/SysAttachmentMapper.xml
@@ -0,0 +1,127 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+<mapper namespace="com.ktg.system.mapper.SysAttachmentMapper">
+    
+    <resultMap type="SysAttachment" id="SysAttachmentResult">
+        <result property="attachmentId"    column="attachment_id"    />
+        <result property="sourceDocId"    column="source_doc_id"    />
+        <result property="sourceDocType"    column="source_doc_type"    />
+        <result property="fileUrl"    column="file_url"    />
+        <result property="basePath"    column="base_path"    />
+        <result property="fileName"    column="file_name"    />
+        <result property="orignalName"    column="orignal_name"    />
+        <result property="fileType"    column="file_type"    />
+        <result property="fileSize"    column="file_size"    />
+        <result property="remark"    column="remark"    />
+        <result property="attr1"    column="attr1"    />
+        <result property="attr2"    column="attr2"    />
+        <result property="attr3"    column="attr3"    />
+        <result property="attr4"    column="attr4"    />
+        <result property="createBy"    column="create_by"    />
+        <result property="createTime"    column="create_time"    />
+        <result property="updateBy"    column="update_by"    />
+        <result property="updateTime"    column="update_time"    />
+    </resultMap>
+
+    <sql id="selectSysAttachmentVo">
+        select attachment_id, source_doc_id, source_doc_type, file_url, base_path, file_name, orignal_name, file_type, file_size, remark, attr1, attr2, attr3, attr4, create_by, create_time, update_by, update_time from sys_attachment
+    </sql>
+
+    <select id="selectSysAttachmentList" parameterType="SysAttachment" resultMap="SysAttachmentResult">
+        <include refid="selectSysAttachmentVo"/>
+        <where>  
+            <if test="sourceDocId != null "> and source_doc_id = #{sourceDocId}</if>
+            <if test="sourceDocType != null  and sourceDocType != ''"> and source_doc_type = #{sourceDocType}</if>
+            <if test="fileUrl != null  and fileUrl != ''"> and file_url = #{fileUrl}</if>
+            <if test="basePath != null  and basePath != ''"> and base_path = #{basePath}</if>
+            <if test="fileName != null  and fileName != ''"> and file_name like concat('%', #{fileName}, '%')</if>
+            <if test="orignalName != null  and orignalName != ''"> and orignal_name like concat('%', #{orignalName}, '%')</if>
+            <if test="fileType != null  and fileType != ''"> and file_type = #{fileType}</if>
+            <if test="fileSize != null "> and file_size = #{fileSize}</if>
+        </where>
+    </select>
+    
+    <select id="selectSysAttachmentByAttachmentId" parameterType="Long" resultMap="SysAttachmentResult">
+        <include refid="selectSysAttachmentVo"/>
+        where attachment_id = #{attachmentId}
+    </select>
+        
+    <insert id="insertSysAttachment" parameterType="SysAttachment" useGeneratedKeys="true" keyProperty="attachmentId">
+        insert into sys_attachment
+        <trim prefix="(" suffix=")" suffixOverrides=",">
+            <if test="sourceDocId != null">source_doc_id,</if>
+            <if test="sourceDocType != null">source_doc_type,</if>
+            <if test="fileUrl != null and fileUrl != ''">file_url,</if>
+            <if test="basePath != null">base_path,</if>
+            <if test="fileName != null">file_name,</if>
+            <if test="orignalName != null">orignal_name,</if>
+            <if test="fileType != null">file_type,</if>
+            <if test="fileSize != null">file_size,</if>
+            <if test="remark != null">remark,</if>
+            <if test="attr1 != null">attr1,</if>
+            <if test="attr2 != null">attr2,</if>
+            <if test="attr3 != null">attr3,</if>
+            <if test="attr4 != null">attr4,</if>
+            <if test="createBy != null">create_by,</if>
+            <if test="createTime != null">create_time,</if>
+            <if test="updateBy != null">update_by,</if>
+            <if test="updateTime != null">update_time,</if>
+         </trim>
+        <trim prefix="values (" suffix=")" suffixOverrides=",">
+            <if test="sourceDocId != null">#{sourceDocId},</if>
+            <if test="sourceDocType != null">#{sourceDocType},</if>
+            <if test="fileUrl != null and fileUrl != ''">#{fileUrl},</if>
+            <if test="basePath != null">#{basePath},</if>
+            <if test="fileName != null">#{fileName},</if>
+            <if test="orignalName != null">#{orignalName},</if>
+            <if test="fileType != null">#{fileType},</if>
+            <if test="fileSize != null">#{fileSize},</if>
+            <if test="remark != null">#{remark},</if>
+            <if test="attr1 != null">#{attr1},</if>
+            <if test="attr2 != null">#{attr2},</if>
+            <if test="attr3 != null">#{attr3},</if>
+            <if test="attr4 != null">#{attr4},</if>
+            <if test="createBy != null">#{createBy},</if>
+            <if test="createTime != null">#{createTime},</if>
+            <if test="updateBy != null">#{updateBy},</if>
+            <if test="updateTime != null">#{updateTime},</if>
+         </trim>
+    </insert>
+
+    <update id="updateSysAttachment" parameterType="SysAttachment">
+        update sys_attachment
+        <trim prefix="SET" suffixOverrides=",">
+            <if test="sourceDocId != null">source_doc_id = #{sourceDocId},</if>
+            <if test="sourceDocType != null">source_doc_type = #{sourceDocType},</if>
+            <if test="fileUrl != null and fileUrl != ''">file_url = #{fileUrl},</if>
+            <if test="basePath != null">base_path = #{basePath},</if>
+            <if test="fileName != null">file_name = #{fileName},</if>
+            <if test="orignalName != null">orignal_name = #{orignalName},</if>
+            <if test="fileType != null">file_type = #{fileType},</if>
+            <if test="fileSize != null">file_size = #{fileSize},</if>
+            <if test="remark != null">remark = #{remark},</if>
+            <if test="attr1 != null">attr1 = #{attr1},</if>
+            <if test="attr2 != null">attr2 = #{attr2},</if>
+            <if test="attr3 != null">attr3 = #{attr3},</if>
+            <if test="attr4 != null">attr4 = #{attr4},</if>
+            <if test="createBy != null">create_by = #{createBy},</if>
+            <if test="createTime != null">create_time = #{createTime},</if>
+            <if test="updateBy != null">update_by = #{updateBy},</if>
+            <if test="updateTime != null">update_time = #{updateTime},</if>
+        </trim>
+        where attachment_id = #{attachmentId}
+    </update>
+
+    <delete id="deleteSysAttachmentByAttachmentId" parameterType="Long">
+        delete from sys_attachment where attachment_id = #{attachmentId}
+    </delete>
+
+    <delete id="deleteSysAttachmentByAttachmentIds" parameterType="String">
+        delete from sys_attachment where attachment_id in 
+        <foreach item="attachmentId" collection="array" open="(" separator="," close=")">
+            #{attachmentId}
+        </foreach>
+    </delete>
+</mapper>
\ No newline at end of file