diff --git a/flake.nix b/flake.nix
index 8c8ee6e..d06d57d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -86,7 +86,7 @@
     };
 
     hyprland.url = "github:hyprwm/Hyprland";
-
+    impermanence.url = "github:nix-community/impermanence";
     # TODO: Add any other flake you might need
     # hardware.url = "github:nixos/nixos-hardware";
 
diff --git a/modules/nixos/tmpsys.nix b/modules/nixos/tmpsys.nix
new file mode 100644
index 0000000..6074ff0
--- /dev/null
+++ b/modules/nixos/tmpsys.nix
@@ -0,0 +1,82 @@
+
+{ config, pkgs, username,inputs, lib, ... }:
+{
+  imports = [
+    inputs.impermanence.nixosModules.impermanence
+  ];
+
+  # 启用 tmpfs 作为根文件系统
+  fileSystems."/" = {
+    device = "none";
+    fsType = "tmpfs";
+    options = [ "defaults" "size=2G" "mode=755" ];
+  };
+
+  # 配置持久化存储
+  environment.persistence."/nix/persistent" = {
+    # 不在文件管理器中显示这些挂载点
+    hideMounts = true;
+
+    directories = [
+      "/etc/nixos"  # NixOS 配置文件
+      "/etc/NetworkManager/system-connections"  # 网络配置
+      "/var/log"    # 系统日志
+      "/var/lib"    # 系统数据
+      "/root"       # root 用户目录
+    ];
+
+    files = [
+      "/etc/machine-id"
+      "/etc/ssh/ssh_host_ed25519_key"
+      "/etc/ssh/ssh_host_ed25519_key.pub"
+      "/etc/ssh/ssh_host_rsa_key"
+      "/etc/ssh/ssh_host_rsa_key.pub"
+    ];
+
+    # 用户目录持久化配置
+    users.${username} = {
+      directories = [
+        # 应用配置
+        ".config"
+        ".cache"
+        ".local"
+        ".ssh"
+        ".gnupg"
+        
+        # 开发相关
+        ".vscode"
+        ".npm"
+        ".cargo"
+
+        "data"
+        "doc"
+      ];
+      
+      files = [
+        ".bash_history"
+        ".zsh_history"
+        ".gitconfig"
+      ];
+    };
+  };
+
+  # 系统启动时确保持久化目录存在
+  system.activationScripts.persistent-dirs.text = ''
+    mkdir -p /nix/persistent
+  '';
+
+  # 建议的 fstab 配置
+  fileSystems."/nix/persistent" = {
+    device = "/dev/disk/by-label/nixos-persistent";  # 需要根据实际情况修改
+    fsType = "ext4";
+    neededForBoot = true;
+  };
+
+  # 将 /nix 存储在持久化分区
+  fileSystems."/nix" = {
+    device = "/nix/persistent/nix";
+    fsType = "btrfs";
+    options = [ "bind" ];
+  };
+}
+
diff --git a/profiles/luna/default.nix b/profiles/luna/default.nix
index e49e00b..6bc974d 100644
--- a/profiles/luna/default.nix
+++ b/profiles/luna/default.nix
@@ -20,6 +20,7 @@ in
     "${self}/modules/nixos/core.nix"
     "${self}/modules/nixos/user-group.nix"
     "${self}/modules/nixos/hyprland.nix"
+    "${self}/modules/nixos/tmpsys.nix"
 
     home-manager.nixosModules.home-manager
     {