diff --git a/ruoyi-admin/src/main/resources/application.yml b/ruoyi-admin/src/main/resources/application.yml
index 2ac3d01..98c10d3 100644
--- a/ruoyi-admin/src/main/resources/application.yml
+++ b/ruoyi-admin/src/main/resources/application.yml
@@ -75,9 +75,9 @@ spring:
   servlet:
     multipart:
       # 单个文件大小
-      max-file-size: 10MB
+      max-file-size: 1024MB
       # 设置总上传的文件大小
-      max-request-size: 20MB
+      max-request-size: 1024MB
   mvc:
     # 设置静态资源路径 防止所有请求都去查静态资源
     static-path-pattern: /static/**
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java
index a829843..f22ede5 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysOssServiceImpl.java
@@ -196,6 +196,9 @@ public class SysOssServiceImpl implements ISysOssService, OssService {
         if (size == 0) {
             throw new ServiceException("上传的文件内容为空");
         }
+        if (size > 1024 * 1024 * 1024) {
+            throw new ServiceException("上传的文件限制为1G以下");
+        }
         String format = DataSizeUtil.format(size);
         String suffix = StringUtils.substring(originalfileName, originalfileName.lastIndexOf("."), originalfileName.length());
         OssClient storage = OssFactory.instance();
@@ -225,7 +228,14 @@ public class SysOssServiceImpl implements ISysOssService, OssService {
     @Override
     public SysOssVo upload(File file) {
         String originalfileName = file.getName();
-        String format = DataSizeUtil.format(file.length());
+        long size = file.length();
+        if (size == 0) {
+            throw new ServiceException("上传的文件内容为空");
+        }
+        if (size > 1024 * 1024 * 1024) {
+            throw new ServiceException("上传的文件限制为1G以下");
+        }
+        String format = DataSizeUtil.format(size);
         String suffix = StringUtils.substring(originalfileName, originalfileName.lastIndexOf("."), originalfileName.length());
         OssClient storage = OssFactory.instance();
         String md5;
diff --git a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysTeacherServiceImpl.java b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysTeacherServiceImpl.java
index c9a7fca..5319574 100644
--- a/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysTeacherServiceImpl.java
+++ b/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/system/service/impl/SysTeacherServiceImpl.java
@@ -1,6 +1,8 @@
 package org.dromara.system.service.impl;
 
+import cn.hutool.core.util.ArrayUtil;
 import cn.hutool.core.util.ObjectUtil;
+import cn.hutool.core.util.StrUtil;
 import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
@@ -14,13 +16,17 @@ import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.dromara.common.mybatis.helper.DataBaseHelper;
 import org.dromara.system.domain.SysDept;
 import org.dromara.system.domain.SysTeacher;
+import org.dromara.system.domain.SysUser;
 import org.dromara.system.domain.bo.SysTeacherBo;
 import org.dromara.system.domain.vo.SysTeacherVo;
+import org.dromara.system.domain.vo.SysUserVo;
 import org.dromara.system.mapper.SysDeptMapper;
 import org.dromara.system.mapper.SysTeacherMapper;
+import org.dromara.system.mapper.SysUserMapper;
 import org.dromara.system.service.ISysTeacherService;
 import org.springframework.stereotype.Service;
 
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 import java.util.Map;
@@ -37,6 +43,7 @@ public class SysTeacherServiceImpl implements ISysTeacherService {
 
     private final SysTeacherMapper baseMapper;
     private final SysDeptMapper deptMapper;
+    private final SysUserMapper userMapper;
 
     /**
      * 查询教职工信息
@@ -152,6 +159,17 @@ public class SysTeacherServiceImpl implements ISysTeacherService {
         if (isValid) {
             //TODO 做一些业务上的校验,判断是否需要校验
         }
+        List<String> nameList = new ArrayList<>();
+        for (Long id : ids) {
+            SysUserVo sysUserVo = userMapper.selectVoOne(new LambdaQueryWrapper<SysUser>().eq(SysUser::getTeacherId, id));
+            if(ObjectUtil.isNotEmpty(sysUserVo)){
+               nameList.add(sysUserVo.getNickName());
+            }
+        }
+        if(ArrayUtil.isNotEmpty(nameList)){
+            String join = StrUtil.join(",", nameList);
+            throw new ServiceException(join+"等教师已绑定系统用户，暂无法删除");
+        }
         return baseMapper.deleteBatchIds(ids) > 0;
     }