diff --git a/lib/PlaceholderAPI.jar b/lib/PlaceholderAPI.jar
new file mode 100644
index 0000000..01da9ea
Binary files /dev/null and b/lib/PlaceholderAPI.jar differ
diff --git a/pom.xml b/pom.xml
index 8d382c5..03814bb 100644
--- a/pom.xml
+++ b/pom.xml
@@ -55,7 +55,7 @@
 	<properties>
 		<jenkins.url>http://ci.citycraft.cn:8080</jenkins.url>
 		<update.description></update.description>
-		<env.BUILD_NUMBER>1</env.BUILD_NUMBER>
+		<env.BUILD_NUMBER>Debug</env.BUILD_NUMBER>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 	</properties>
 	<repositories>
@@ -81,5 +81,12 @@
 			<type>jar</type>
 			<version>1.0</version>
 		</dependency>
+		<dependency>
+			<groupId>me.clip</groupId>
+			<artifactId>PlaceholderAPI</artifactId>
+			<version>1.8.6</version>
+			<scope>system</scope>
+			<systemPath>${project.basedir}/lib/PlaceholderAPI.jar</systemPath>
+		</dependency>
 	</dependencies>
 </project>
\ No newline at end of file
diff --git a/src/main/java/cn/citycraft/DataStorage/DataStorage.java b/src/main/java/cn/citycraft/DataStorage/DataStorage.java
index c8fd019..5da3f5b 100644
--- a/src/main/java/cn/citycraft/DataStorage/DataStorage.java
+++ b/src/main/java/cn/citycraft/DataStorage/DataStorage.java
@@ -1,21 +1,98 @@
 package cn.citycraft.DataStorage;
 
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.bukkit.configuration.ConfigurationSection;
+import org.bukkit.entity.Player;
 import org.bukkit.plugin.java.JavaPlugin;
 
 import cn.citycraft.PluginHelper.config.FileConfig;
+import cn.citycraft.PluginHelper.pluginapi.PluginAPI;
 import cn.citycraft.PluginHelper.sql.DataBase;
+import cn.citycraft.PluginHelper.sql.KeyValue;
+import cn.citycraft.PluginHelper.sql.MySQLCore;
+import cn.citycraft.PluginHelper.sql.SQLiteCore;
 
 public class DataStorage extends JavaPlugin {
 	FileConfig config;
 	DataBase db;
+	String kfields = "key";
+	String tableName;
+	String vfields = "value";
+
+	@Override
+	public boolean onCommand(final CommandSender sender, final Command command, final String label, final String[] args) {
+		if (args.length > 1) {
+			final String subcmd = args[0];
+			final String key = args[1];
+			final KeyValue kv = new KeyValue(kfields, key);
+			int value = 0;
+			int dbValue = 0;
+			try {
+				value = Integer.valueOf(args[2]);
+				dbValue = Integer.valueOf(db.dbSelectFirst(tableName, vfields, kv));
+			} catch (final Exception e) {
+			}
+			if (args.length > 2 && value != 0) {
+				switch (subcmd) {
+				case "add":
+					db.dbUpdate(tableName, new KeyValue(vfields, value + dbValue), kv);
+					return true;
+				case "del":
+					db.dbUpdate(tableName, new KeyValue(vfields, dbValue - value), kv);
+					return true;
+				case "create":
+					db.dbInsert(tableName, kv.add(vfields, value));
+					return true;
+				}
+			}
+			if (args.length > 1) {
+				db.dbDelete(tableName, kv);
+				return true;
+			}
+		}
+		final String[] help = new String[] { "§6dd add key value 键key的值添加value!", "§6dd del key value 键key的值减少value!", "§6dd add key value 创建键key设置值为value!", "§6dd remove key 移除key!" };
+		sender.sendMessage(help);
+		return true;
+	}
 
 	@Override
 	public void onDisable() {
+		if (db != null) {
+			db.close();
+		}
 	}
 
 	@Override
 	public void onEnable() {
-
+		final ConfigurationSection cfg = config.getConfigurationSection("Data.MySQL");
+		if (config.getMessage("Data.FileSystem").equalsIgnoreCase("MySQL")) {
+			db = new DataBase(new MySQLCore(cfg));
+		} else {
+			db = new DataBase(new SQLiteCore(this, cfg));
+		}
+		tableName = config.getMessage("Data.MySQL.tablename");
+		if (db.testConnect()) {
+			this.getLogger().info("数据库连接成功,检查数据表是否存在...");
+			if (!db.isTableExists(tableName)) {
+				this.getLogger().info("数据表不存在,新建表" + tableName + "...");
+				if (!db.createTables(tableName, new KeyValue(kfields, "VARCHAR(30) PRIMARY KEY").add(vfields, "INT"), "UNIQUE (`key`)")) {
+					this.getLogger().info("数据表" + tableName + "创建失败,请尝试手动创建并重启服务器...");
+				}
+			}
+		} else {
+			this.getLogger().warning("数据库连接失败!");
+			this.getServer().getPluginManager().disablePlugin(this);
+		}
+		final boolean result = PluginAPI.PlaceholderHook("dd", new me.clip.placeholderapi.PlaceholderHook() {
+			@Override
+			public String onPlaceholderRequest(final Player arg0, final String arg1) {
+				return db.dbSelectFirst(tableName, vfields, new KeyValue(kfields, arg1));
+			}
+		});
+		if (result) {
+			this.getLogger().info("发现 PlaceholderAPI 已关联...");
+		}
 	}
 
 	@Override
diff --git a/src/main/resources/config.yml b/src/main/resources/config.yml
new file mode 100644
index 0000000..c061f52
--- /dev/null
+++ b/src/main/resources/config.yml
@@ -0,0 +1,13 @@
+Data:
+  #数据保存方式 [sqlite|MySQL]
+  FileSystem: sqlite
+  #MySQL数据库配置 只有当FileSystem配置为MySQL时有效
+  MySQL:
+    #数据库需要自行建立
+    database: minecraft
+    #数据表需要自行建立
+    tablename: datastorage
+    username: root
+    password: 
+    ip: localhost
+    port: 3306
\ No newline at end of file
diff --git a/src/main/resources/plugin.yml b/src/main/resources/plugin.yml
new file mode 100644
index 0000000..7f2fde4
--- /dev/null
+++ b/src/main/resources/plugin.yml
@@ -0,0 +1,19 @@
+name: ${project.artifactId}
+description: ${project.description}
+main: ${project.groupId}.${project.artifactId}.${project.artifactId}
+version: ${project.version}-Build#${env.BUILD_NUMBER}
+author: 喵♂呜
+website: ${jenkins.url}/job/${project.artifactId}/
+commands:
+  ${project.artifactId}:
+    description: ${project.artifactId} - ${project.description}
+    aliases:
+    - dd
+    - ds
+    usage: §b使用/${project.artifactId} help 查看帮助!
+    permission: ${project.artifactId}.use
+    permission-message: §c你没有 <permission> 的权限来执行此命令!
+permissions:
+  ${project.artifactId}.use:
+    description: ${project.artifactId} 使用!
+    default: op
\ No newline at end of file