diff --git a/src/main/java/com/mmlsystem/PlayerExpSystem/ExpAPI.java b/src/main/java/com/mmlsystem/PlayerExpSystem/ExpAPI.java
new file mode 100644
index 0000000..3501455
--- /dev/null
+++ b/src/main/java/com/mmlsystem/PlayerExpSystem/ExpAPI.java
@@ -0,0 +1,46 @@
+package com.mmlsystem.PlayerExpSystem;
+
+import org.bukkit.Bukkit;
+import org.bukkit.entity.Player;
+
+import java.sql.Connection;
+import java.sql.PreparedStatement;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.function.Consumer;
+
+public class ExpAPI {
+    private final Connection connection;
+    private final Foundation plugin;
+
+    public ExpAPI(Foundation plugin) {
+        this.plugin = plugin;
+        plugin.setupDatabase();
+        this.connection = plugin.getConnection();
+    }
+
+    public void getPlayerOnlineTime(Player player, Consumer<Integer> callback) {
+        Bukkit.getScheduler().runTaskAsynchronously(plugin, () -> {
+            int time;
+            try {
+                PreparedStatement ps = connection.prepareStatement("SELECT total FROM playtime WHERE uuid=?");
+                ps.setString(1, player.getUniqueId().toString());
+                ResultSet rs = ps.executeQuery();
+                if (rs.next()) {
+                    time = rs.getInt("total");
+                } else {
+                    plugin.getLogger().warning("读取数据库失败！");
+                    time = -1;
+                }
+                rs.close();
+                ps.close();
+            } catch (SQLException e) {
+                plugin.getLogger().severe(e.getMessage());
+                time = -1;
+            }
+
+            int finalMessage = time;
+            Bukkit.getScheduler().runTask(plugin, () -> callback.accept(finalMessage));
+        });
+    }
+}