diff --git a/app.db b/app.db
index e0426df..152246a 100644
Binary files a/app.db and b/app.db differ
diff --git a/src/main/java/a8k/dbservice/AppUsrDBService.java b/src/main/java/a8k/dbservice/AppUsrDBService.java
index 72d8b7c..c10cf82 100644
--- a/src/main/java/a8k/dbservice/AppUsrDBService.java
+++ b/src/main/java/a8k/dbservice/AppUsrDBService.java
@@ -73,13 +73,19 @@ public class AppUsrDBService {
 	}
 
 	public AppUser getUsrByAccount(String account) {
-		return jdbcTemplate.queryForObject("select * from zapp_usr_table where account = ?;", this::rowMapper,//
-				account);
+		try {
+			return jdbcTemplate.queryForObject("select * from zapp_usr_table where account = ?;", this::rowMapper, account);
+		} catch (Exception e) {
+			return null;
+		}
 	}
 
 	public AppUser getUsrById(Integer id) {
-		return jdbcTemplate.queryForObject("select * from zapp_usr_table where id = ?;", this::rowMapper,//
-				id);
+		try {
+			return jdbcTemplate.queryForObject("select * from zapp_usr_table where id = ?;", this::rowMapper, id);
+		} catch (Exception e) {
+			return null;
+		}
 	}
 
 }
diff --git a/src/main/java/a8k/dbservice/type/AppUser.java b/src/main/java/a8k/dbservice/type/AppUser.java
index cd8684f..8a9adc3 100644
--- a/src/main/java/a8k/dbservice/type/AppUser.java
+++ b/src/main/java/a8k/dbservice/type/AppUser.java
@@ -3,11 +3,11 @@ package a8k.dbservice.type;
 import a8k.utils.ZJsonHelper;
 
 public class AppUser {
-	public int     id = -1;
+	public int     id = 0;
 	public String  account;
 	public String  password;
 	public UsrRole usrRole;
-	public Boolean isBuiltInUser;
+	public Boolean isBuiltInUser = false;
 
 	@Override
 	public String toString() {
diff --git a/src/main/java/a8k/service/app/AppUserMgrService.java b/src/main/java/a8k/service/app/AppUserMgrService.java
index dff1eb4..b772577 100644
--- a/src/main/java/a8k/service/app/AppUserMgrService.java
+++ b/src/main/java/a8k/service/app/AppUserMgrService.java
@@ -30,6 +30,7 @@ public class AppUserMgrService {
 		static final int modifyUser    = 7;
 		static final int modifyUsrPwd  = 8;
 		static final int modifyUsrRole = 9;
+		static final int modifyUsrAccount = 10;
 	}
 
 	@Resource
@@ -88,38 +89,35 @@ public class AppUserMgrService {
 		return getUsrlist();
 	}
 
-	@ExtApiFn(name = "修改用户", order = ORDER.modifyUser)
-	public AppRet<List<AppUser>> modifyUser(Integer id, String account, String password, UsrRole usrRole) {
-		var user = appUsrDBService.getUsrById(id);
+	@ExtApiFn(name = "修改用户密码", order = ORDER.modifyUsrPwd)
+	public AppRet<List<AppUser>> modifyUsrPwd(String account, String password) {
+		var user = appUsrDBService.getUsrByAccount(account);
 		if (user == null) {
 			return AppRet.fail(A8kEcode.UsrNotExitError);
 		}
-		user.account  = account;
 		user.password = password;
-		user.usrRole  = usrRole;
 		appUsrDBService.updateUser(user);
 		return getUsrlist();
 	}
 
-
-	@ExtApiFn(name = "修改用户密码", order = ORDER.modifyUsrPwd)
-	public AppRet<List<AppUser>> modifyUsrPwd(String account, String password) {
+	@ExtApiFn(name = "修改用户权限", order = ORDER.modifyUsrRole)
+	public AppRet<List<AppUser>> modifyUsrRole(String account, UsrRole usrRole) {
 		var user = appUsrDBService.getUsrByAccount(account);
 		if (user == null) {
 			return AppRet.fail(A8kEcode.UsrNotExitError);
 		}
-		user.password = password;
+		user.usrRole = usrRole;
 		appUsrDBService.updateUser(user);
 		return getUsrlist();
 	}
 
-	@ExtApiFn(name = "修改用户权限", order = ORDER.modifyUsrRole)
-	public AppRet<List<AppUser>> modifyUsrRole(String account, UsrRole usrRole) {
+	@ExtApiFn(name = "修改用户名称", order = ORDER.modifyUsrAccount)
+	public AppRet<List<AppUser>> modifyUsrAccount(String account, String newaccount) {
 		var user = appUsrDBService.getUsrByAccount(account);
 		if (user == null) {
 			return AppRet.fail(A8kEcode.UsrNotExitError);
 		}
-		user.usrRole = usrRole;
+		user.account = newaccount;
 		appUsrDBService.updateUser(user);
 		return getUsrlist();
 	}