diff --git a/home/hyprland/default.nix b/home/hyprland/default.nix
index 909bb46e..77cf5efb 100644
--- a/home/hyprland/default.nix
+++ b/home/hyprland/default.nix
@@ -15,10 +15,12 @@
   };
   home.file.".gtkrc-2.0".source = ./gtkrc-2.0;
   home.file.".config/hypr/wallpapers/wallpaper.png".source = ../wallpapers/wallpaper.png;
-  home.file.".config/fcitx5" = {
-    source = ./fcitx5;
-    recursive = true;
-  };
+  
+ # need set fcitx5's config dir readonly, to avoid other tools overwrite it.
+ home.file.".config/fcitx5" = {
+   source = ./fcitx5;
+   recursive = true;
+ };
 
   # allow fontconfig to discover fonts and configurations installed through home.packages
   fonts.fontconfig.enable = true;
diff --git a/home/hyprland/fcitx5/profile b/home/hyprland/fcitx5/profile
index 59663ac1..ca43a79c 100644
--- a/home/hyprland/fcitx5/profile
+++ b/home/hyprland/fcitx5/profile
@@ -12,11 +12,6 @@ Name=rime
 # Layout
 Layout=
 
-[Groups/0/Items/1]
-# Name
-Name=keyboard-us
-# Layout
-Layout=
-
 [GroupOrder]
-0=Other
\ No newline at end of file
+0=Other
+
diff --git a/home/hyprland/hypr-conf/hyprland.conf b/home/hyprland/hypr-conf/hyprland.conf
index 721c28b9..97127ca7 100644
--- a/home/hyprland/hypr-conf/hyprland.conf
+++ b/home/hyprland/hypr-conf/hyprland.conf
@@ -193,7 +193,9 @@ exec-once=~/.config/hypr/scripts/startup
 
 
 #-- Fcitx5 input method ----------------------------------------------------
-windowrule=pseudo,fcitx
+windowrule=pseudo,fcitx    # enable this will make fcitx5 works, but fcitx5-configtool will not work!
+# set fcitx5's config dir readonly
+exec-once=chmod 500 ~/.config/fcitx5
 exec-once=fcitx5-remote -r
 exec-once=fcitx5 -d --replace
 exec-once=fcitx5-remote -r