diff --git a/src/main/java/com/dsideal/QingLong/DataShare/Controller/DataShareController.java b/src/main/java/com/dsideal/QingLong/DataShare/Controller/DataShareController.java
index f0f08496..73164371 100644
--- a/src/main/java/com/dsideal/QingLong/DataShare/Controller/DataShareController.java
+++ b/src/main/java/com/dsideal/QingLong/DataShare/Controller/DataShareController.java
@@ -278,7 +278,7 @@ public class DataShareController extends Controller {
     @IsSysAdminInterface({"1"})
     @IsNumericInterface({"system_id"})
     public void changePwd(int system_id) {
-        dm.changePwd(system_id,CommonUtil.generatePassword(10));
+        dm.changePwd(system_id, CommonUtil.generatePassword(10));
         Kv kv = Kv.by("success", true);
         kv.set("message", "修改成功！");
         renderJson(kv);
@@ -302,6 +302,14 @@ public class DataShareController extends Controller {
             renderJson(kv);
             return;
         }
+        //检查一下共享的表是不是已经被其它系统共享过？
+        if (!dm.checkShareTable(system_id,table_names)) {
+            Kv kv = Kv.by("success", false);
+            kv.set("message", "检查到要共享的数据表已经被其它业务系统共享，请检查后重新录入！");
+            renderJson(kv);
+            return;
+        }
+
         dm.share(system_id, table_names);
         Kv kv = Kv.by("success", true);
         kv.set("message", "保存成功！");
diff --git a/src/main/java/com/dsideal/QingLong/DataShare/Model/DataShareModel.java b/src/main/java/com/dsideal/QingLong/DataShare/Model/DataShareModel.java
index af25c6cc..7b8a5a22 100644
--- a/src/main/java/com/dsideal/QingLong/DataShare/Model/DataShareModel.java
+++ b/src/main/java/com/dsideal/QingLong/DataShare/Model/DataShareModel.java
@@ -9,8 +9,7 @@ import com.jfinal.plugin.activerecord.Page;
 import com.jfinal.plugin.activerecord.Record;
 import com.jfinal.plugin.activerecord.SqlPara;
 
-import java.util.ArrayList;
-import java.util.List;
+import java.util.*;
 
 public class DataShareModel {
     public Page<Record> listSystem(String keyword, int exclude, int page, int limit) {
@@ -66,10 +65,16 @@ public class DataShareModel {
         PgUtil.delUser(user_name);
         //2、删除数据表记录
         Db.deleteById("t_datashare_system", "system_id", system_id);
-        //3、删除此系统共享表
-        String sql = "delete from t_datashare_table where system_id=?";
+
+        //3、共享了哪些表
+        String sql = "select * from t_datashare_table where system_id=?";
+        List<Record> shareTableList = Db.find(sql, system_id);
+        //4、删除此系统共享表
+        sql = "delete from t_datashare_table where system_id=?";
         Db.update(sql, system_id);
-        //4、删除所有其它系统对此系统的订阅
+
+        //5、删除所有其它系统对此系统的订阅
+        List<Integer> subSystemList = getSubSystemList(system_id);
         sql = "select * from t_datashare_system";
         List<Record> list = Db.find(sql);
         for (Record record : list) {
@@ -87,6 +92,37 @@ public class DataShareModel {
             sql = "update t_datashare_system set subscribe_system_ids=? where system_id=?";
             Db.update(sql, new_subscribe_system_ids, sub_system_id);
         }
+        //5、回收其它订阅系统对它共享表的授权
+        for (Record record : shareTableList) {
+            String table_name = record.getStr("table_name");
+            for (Integer v_system_id : subSystemList) {
+                String v_user_name = getSystemById(v_system_id).getStr("user_name");
+                PgUtil.revokeUserPrivilege(v_user_name, table_name, PgUtil.READ);
+            }
+        }
+    }
+
+    /**
+     * 功能：检查要共享的表是不是已经被其它业务系统共享过？
+     *
+     * @param table_names
+     * @return
+     */
+    public boolean checkShareTable(int system_id, String table_names) {
+        String sql = "select * from t_datashare_table";
+        List<Record> list = Db.find(sql);
+        Map<String, Integer> _map = new HashMap<>();
+        for (Record record : list) {
+            _map.put(record.getStr("table_name"), record.getInt("system_id"));
+        }
+        for (String s : table_names.split(",")) {
+            if (_map.containsKey(s)) {
+                if (_map.get(s) != system_id) {
+                    return false;
+                }
+            }
+        }
+        return true;
     }
 
     /**