diff --git a/router/db.c b/router/db.c
index 162aa36..76bd79c 100644
--- a/router/db.c
+++ b/router/db.c
@@ -87,6 +87,29 @@ int insert(const char *sql, MYSQL_BIND *params)
     return ret; // 返回是影响的行数
 }
 
+int delete(const char *sql, MYSQL_BIND *params)
+{
+    MYSQL_STMT *stmt = mysql_stmt_init(conn_db);
+    mysql_stmt_prepare(stmt, sql, strlen(sql));
+
+    if (params != NULL)
+    {
+        if (mysql_stmt_bind_param(stmt, params)) // 11）错误 0）成功
+        {
+            mysql_stmt_close(stmt);
+            return -1;
+        }
+    }
+    if (mysql_stmt_execute(stmt) != 0)
+    {
+        mysql_stmt_close(stmt);
+        return -1;
+    }
+    int ret = mysql_stmt_fetch(stmt);
+    mysql_stmt_close(stmt);
+    return ret; // 返回是影响的行数
+}
+
 int close_mysql()
 {
     if (conn_db != NULL)
diff --git a/router/db.h b/router/db.h
index 8ac2b3f..065f0f2 100644
--- a/router/db.h
+++ b/router/db.h
@@ -18,5 +18,8 @@ extern int result_rows(const char *sql);
 // 插入
 extern int insert(const char *sql, MYSQL_BIND *params);
 
+extern int delete(const char *sql, MYSQL_BIND *params);
+
+
 // 更新
 extern int update(const char *sql, MYSQL_BIND *params);