diff --git a/PP-binding/backend/.gitignore b/PP-binding/backend/.gitignore
index 667aaef..a71cd2b 100644
--- a/PP-binding/backend/.gitignore
+++ b/PP-binding/backend/.gitignore
@@ -1,4 +1,3 @@
-HELP.md
target/
.mvn/wrapper/maven-wrapper.jar
!**/src/main/**/target/
diff --git a/PP-binding/backend/README.md b/PP-binding/backend/README.md
new file mode 100644
index 0000000..76784dc
--- /dev/null
+++ b/PP-binding/backend/README.md
@@ -0,0 +1,64 @@
+# 部署方法(linux)
+
+## 所需软件
+- mariadb
+- nginx
+
+# 数据库说明
+
+## 建表语句
+CREATE TABLE `item_info` (
+`id` int(11) NOT NULL AUTO_INCREMENT,
+`basic_tool_type` varchar(20) NOT NULL,
+`basic_tool_id` varchar(40) NOT NULL,
+`platform_name` varchar(30) NOT NULL,
+`danger_level` tinyint(1) NOT NULL,
+`user_name` varchar(40) NOT NULL,
+`user_password` varchar(50) DEFAULT NULL,
+`remark` varchar(100) DEFAULT NULL,
+`insert_datetime` datetime NOT NULL,
+`update_datetime` datetime NOT NULL,
+`other_platforms` longtext CHARACTER SET utf8mb4 COLLATE utf8mb4_bin DEFAULT NULL CHECK (json_valid(`other_platforms`)),
+PRIMARY KEY (`id`),
+UNIQUE KEY `uk_platform_name_and_user_name` (`platform_name`,`user_name`)
+) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_uca1400_ai_ci;
+
+## 字段说明
+
+| 字段名 | 类型 | 是否可空 | 注释 |
+|-----------------|--------------|------|-----------------------------------------|
+| id | int(11) | NO | 该条数据的唯一ID，不可重复 |
+| basic_tool_type | varchar(20) | NO | 基础工具的类型，使用常量 |
+| basic_tool_id | varchar(40) | NO | 基础工具的ID，如手机号码，电子邮箱等 |
+| platform_name | varchar(30) | NO | 绑定到的目标平台名字，和user_name作为来联合唯一键 |
+| danger_level | tinyint(1) | NO | 危险等级，使用常量 |
+| user_name | varchar(40) | NO | 目标平台的用户名，尽量是唯一ID，和platform_name作为来联合唯一键 |
+| user_password | varchar(50) | YES | 目标平台的密码 |
+| other_platforms | json | YES | 当前平台下可能还绑定了其他平台的合集 |
+| insert_datetime | datetime | NO | 这条数据的插入时间 |
+| update_datetime | datetime | NO | 这条数据的最后一次修改时间 |
+| remark | varchar(100) | YES | 对于这条数据的备注 |
+
+## 数据示例
+
+| 字段名 | 数据 |
+|-----------------|---------------------------------------------------------------------------------------------------------------------------------------------|
+| id | 1 |
+| basic_tool_type | PHTONE_NUMBER |
+| basic_tool_id | 12345678900 |
+| platform_name | 微信 |
+| danger_level | 0 |
+| user_name | XiaoAiTongXue |
+| user_password | 123@abc |
+| other_platforms | [
{"platform_name": "邮箱", "user_id": "xiaoai@163.com"},
{"platform_name": "支付宝", "user_id": "XiaoAi"}
] |
+| insert_datetime | NOW() |
+| update_datetime | "2026-12-12 15:00:00" |
+| remark | 微信 |
+
+### 插入数据示例
+
+insert into item_info(basic_tool_type, basic_tool_id, platform_name, danger_level, user_name, user_password,
+other_platforms, insert_datetime, update_datetime, remark)
+values("PHONE_NUMBER", "12345678900", "微信", 0, "XiaoAiTongXue", "123@abc", JSON_ARRAY(JSON_OBJECT("platform_name", "
+邮箱", "user_id", "xiaoai@163.com"), JSON_OBJECT("platform_name", "支付宝", "user_id", "XiaoAi")), NOW(), "2026-12-12
+15:00:00", "微信");
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