diff --git a/src/main/java/org/xgqy/survival/AccountManager.java b/src/main/java/org/xgqy/survival/AccountManager.java
index d60cc70..282934c 100644
--- a/src/main/java/org/xgqy/survival/AccountManager.java
+++ b/src/main/java/org/xgqy/survival/AccountManager.java
@@ -40,8 +40,15 @@ public class AccountManager {
         for (String key : accountsConfig.getKeys(false)) {
             try {
                 UUID uuid = UUID.fromString(key);
-                PlayerAccount account = (PlayerAccount) accountsConfig.get(key);
-                if (account != null) {
+
+                // 手动读取字段并构建PlayerAccount对象
+                String name = accountsConfig.getString(key + ".username");
+                String passwordHash = accountsConfig.getString(key + ".passwordHash");
+                long lastLoginTime = accountsConfig.getLong(key + ".lastLoginTime", 0);
+
+                if (name != null && passwordHash != null) {
+                    PlayerAccount account = new PlayerAccount(name, passwordHash);
+                    account.setLastLoginTime(lastLoginTime);
                     accounts.put(uuid, account);
                 }
             } catch (IllegalArgumentException e) {
@@ -52,9 +59,14 @@ public class AccountManager {
 
     public void saveAccounts() {
         for (Map.Entry<UUID, PlayerAccount> entry : accounts.entrySet()) {
-            accountsConfig.set(entry.getKey().toString(), entry.getValue());
-        }
+            String uuidStr = entry.getKey().toString();
+            PlayerAccount account = entry.getValue();
 
+            // 手动存储每个字段
+            accountsConfig.set(uuidStr + ".username", account.getUsername());
+            accountsConfig.set(uuidStr + ".passwordHash", account.getPasswordHash());
+            accountsConfig.set(uuidStr + ".lastLoginTime", account.getLastLoginTime());
+        }
         try {
             accountsConfig.save(accountsFile);
         } catch (IOException e) {