diff --git a/README.md b/README.md
index 46b3612..76d953f 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,7 @@ TODO
 - [x] 剪辑板传输
 - [x] 文件夹传输
 - [x] 多样化图标
-- [ ] 加密传输
 - [x] 取消传输
-- [x] 多文件发送
\ No newline at end of file
+- [x] 多文件发送
+- [ ] 加密传输
+- [ ] 设置页面：默认保存路径
\ No newline at end of file
diff --git a/frontend/src/components/MainLayout.vue b/frontend/src/components/MainLayout.vue
index 69a0c96..0d912a1 100644
--- a/frontend/src/components/MainLayout.vue
+++ b/frontend/src/components/MainLayout.vue
@@ -10,8 +10,6 @@ import {
   NSpace,
   NText,
   NEmpty,
-  NGrid,
-  NGi,
   NMenu,
   NBadge,
   NButton,
@@ -176,15 +174,15 @@ const handleMenuUpdate = (key: string) => {
     <n-layout-content class="content">
       <div class="content-container">
         <!-- 发现页视图 -->
-        <div v-if="activeKey === 'discover'">
+        <div v-show="activeKey === 'discover'">
           <n-space vertical size="large" v-if="peers.length > 0">
-            <n-grid x-gap="16" y-gap="16" cols="1 500:2 700:3">
-              <n-gi v-for="peer in peers" :key="peer.id">
+            <div class="peer-grid">
+              <div v-for="peer in peers" :key="peer.id">
                 <PeerCard
                   :peer="peer"
                   @transferStarted="activeKey = 'transfers'" />
-              </n-gi>
-            </n-grid>
+              </div>
+            </div>
           </n-space>
 
           <div v-else class="empty-state">
@@ -199,7 +197,7 @@ const handleMenuUpdate = (key: string) => {
         </div>
 
         <!-- 传输列表视图 -->
-        <div v-else-if="activeKey === 'transfers'">
+        <div v-show="activeKey === 'transfers'">
           <div v-if="transferList.length > 0">
             <TransferItem
               v-for="transfer in transferList"
@@ -260,4 +258,22 @@ const handleMenuUpdate = (key: string) => {
     transform: rotate(360deg);
   }
 }
+
+.peer-grid {
+  display: grid;
+  grid-template-columns: repeat(1, minmax(0, 1fr));
+  gap: 16px;
+}
+
+@media (min-width: 500px) {
+  .peer-grid {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+}
+
+@media (min-width: 700px) {
+  .peer-grid {
+    grid-template-columns: repeat(3, minmax(0, 1fr));
+  }
+}
 </style>
diff --git a/frontend/src/components/PeerCard.vue b/frontend/src/components/PeerCard.vue
index fd381ec..52bbd34 100644
--- a/frontend/src/components/PeerCard.vue
+++ b/frontend/src/components/PeerCard.vue
@@ -315,7 +315,9 @@ const handleSendFiles = () => {
     </template>
   </n-card>
 
+  <!-- 文件发送 Modal -->
   <n-modal
+    :mask-closable="false"
     v-model:show="showFileModal"
     preset="card"
     title="Send Files"
@@ -375,6 +377,7 @@ const handleSendFiles = () => {
 
   <!-- 文本发送 Modal -->
   <n-modal
+    :mask-closable="false"
     v-model:show="showTextModal"
     preset="card"
     title="Send Text"
diff --git a/go.mod b/go.mod
index 96ce153..d92a269 100644
--- a/go.mod
+++ b/go.mod
@@ -22,6 +22,7 @@ require (
 	github.com/cyphar/filepath-securejoin v0.6.1 // indirect
 	github.com/ebitengine/purego v0.9.1 // indirect
 	github.com/emirpasic/gods v1.18.1 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
 	github.com/gabriel-vasile/mimetype v1.4.8 // indirect
 	github.com/gin-contrib/sse v1.1.0 // indirect
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
@@ -31,6 +32,7 @@ require (
 	github.com/go-playground/locales v0.14.1 // indirect
 	github.com/go-playground/universal-translator v0.18.1 // indirect
 	github.com/go-playground/validator/v10 v10.27.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/goccy/go-yaml v1.18.0 // indirect
 	github.com/godbus/dbus/v5 v5.2.2 // indirect
@@ -54,14 +56,22 @@ require (
 	github.com/quic-go/qpack v0.5.1 // indirect
 	github.com/quic-go/quic-go v0.54.0 // indirect
 	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/sagikazarmark/locafero v0.11.0 // indirect
 	github.com/samber/lo v1.52.0 // indirect
 	github.com/sergi/go-diff v1.4.0 // indirect
 	github.com/skeema/knownhosts v1.3.2 // indirect
+	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/spf13/viper v1.21.0 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.3.0 // indirect
 	github.com/wailsapp/go-webview2 v1.0.23 // indirect
 	github.com/xanzy/ssh-agent v0.3.3 // indirect
 	go.uber.org/mock v0.5.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
 	golang.org/x/arch v0.20.0 // indirect
 	golang.org/x/crypto v0.47.0 // indirect
 	golang.org/x/mod v0.32.0 // indirect
diff --git a/go.sum b/go.sum
index f7d7575..6ce5739 100644
--- a/go.sum
+++ b/go.sum
@@ -34,6 +34,8 @@ github.com/elazarl/goproxy v1.7.2 h1:Y2o6urb7Eule09PjlhQRGNsqRfPmYI3KKQLFpCAV3+o
 github.com/elazarl/goproxy v1.7.2/go.mod h1:82vkLNir0ALaW14Rc399OTTjyNREgmdL2cVoIbS6XaE=
 github.com/emirpasic/gods v1.18.1 h1:FXtiHYKDGKCW2KzwZKx0iC0PQmdlorYgdFG9jPXJ1Bc=
 github.com/emirpasic/gods v1.18.1/go.mod h1:8tpGGwCnJ5H4r6BWwaV6OrWmMoPhUl5jm/FMNAnJvWQ=
+github.com/fsnotify/fsnotify v1.9.0 h1:2Ml+OJNzbYCTzsxtv8vKSFD9PbJjmhYF14k/jKC7S9k=
+github.com/fsnotify/fsnotify v1.9.0/go.mod h1:8jBTzvmWwFyi3Pb8djgCCO5IBqzKJ/Jwo8TRcHyHii0=
 github.com/gabriel-vasile/mimetype v1.4.8 h1:FfZ3gj38NjllZIeJAmMhr+qKL8Wu+nOoI3GqacKw1NM=
 github.com/gabriel-vasile/mimetype v1.4.8/go.mod h1:ByKUIKGjh1ODkGM1asKUbQZOLGrPjydw3hYPU2YU9t8=
 github.com/gin-contrib/sse v1.1.0 h1:n0w2GMuUpWDVp7qSpvze6fAu9iRxJY4Hmj6AmBOU05w=
@@ -62,6 +64,8 @@ github.com/go-playground/universal-translator v0.18.1 h1:Bcnm0ZwsGyWbCzImXv+pAJn
 github.com/go-playground/universal-translator v0.18.1/go.mod h1:xekY+UJKNuX9WP91TpwSH2VMlDf28Uj24BCp08ZFTUY=
 github.com/go-playground/validator/v10 v10.27.0 h1:w8+XrWVMhGkxOaaowyKH35gFydVHOvC0/uWoy2Fzwn4=
 github.com/go-playground/validator/v10 v10.27.0/go.mod h1:I5QpIEbmr8On7W0TktmJAumgzX4CA1XNl4ZmDuVHKKo=
+github.com/go-viper/mapstructure/v2 v2.4.0 h1:EBsztssimR/CONLSZZ04E8qAkxNYq4Qp9LvH92wZUgs=
+github.com/go-viper/mapstructure/v2 v2.4.0/go.mod h1:oJDH3BJKyqBA2TXFhDsKDGDTlndYOZ6rGS0BRZIxGhM=
 github.com/goccy/go-json v0.10.2 h1:CrxCmQqYDkv1z7lO7Wbh2HN93uovUHgrECaO5ZrCXAU=
 github.com/goccy/go-json v0.10.2/go.mod h1:6MelG93GURQebXPDq3khkgXZkazVtN9CRI+MGFi0w8I=
 github.com/goccy/go-yaml v1.18.0 h1:8W7wMFS12Pcas7KU+VVkaiCng+kG8QiFeFwzFb+rwuw=
@@ -132,6 +136,8 @@ github.com/rivo/uniseg v0.4.7 h1:WUdvkW8uEhrYfLC4ZzdpI2ztxP1I582+49Oc5Mq64VQ=
 github.com/rivo/uniseg v0.4.7/go.mod h1:FN3SvrM+Zdj16jyLfmOkMNblXMcoc8DfTHruCPUcx88=
 github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
 github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
+github.com/sagikazarmark/locafero v0.11.0 h1:1iurJgmM9G3PA/I+wWYIOw/5SyBtxapeHDcg+AAIFXc=
+github.com/sagikazarmark/locafero v0.11.0/go.mod h1:nVIGvgyzw595SUSUE6tvCp3YYTeHs15MvlmU87WwIik=
 github.com/samber/lo v1.52.0 h1:Rvi+3BFHES3A8meP33VPAxiBZX/Aws5RxrschYGjomw=
 github.com/samber/lo v1.52.0/go.mod h1:4+MXEGsJzbKGaUEQFKBq2xtfuznW9oz/WrgyzMzRoM0=
 github.com/sergi/go-diff v1.4.0 h1:n/SP9D5ad1fORl+llWyN+D6qoUETXNZARKjyY2/KVCw=
@@ -139,6 +145,16 @@ github.com/sergi/go-diff v1.4.0/go.mod h1:A0bzQcvG0E7Rwjx0REVgAGH58e96+X0MeOfepq
 github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
 github.com/skeema/knownhosts v1.3.2 h1:EDL9mgf4NzwMXCTfaxSD/o/a5fxDw/xL9nkU28JjdBg=
 github.com/skeema/knownhosts v1.3.2/go.mod h1:bEg3iQAuw+jyiw+484wwFJoKSLwcfd7fqRy+N0QTiow=
+github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 h1:+jumHNA0Wrelhe64i8F6HNlS8pkoyMv5sreGx2Ry5Rw=
+github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8/go.mod h1:3n1Cwaq1E1/1lhQhtRK2ts/ZwZEhjcQeJQ1RuC6Q/8U=
+github.com/spf13/afero v1.15.0 h1:b/YBCLWAJdFWJTN9cLhiXXcD7mzKn9Dm86dNnfyQw1I=
+github.com/spf13/afero v1.15.0/go.mod h1:NC2ByUVxtQs4b3sIUphxK0NioZnmxgyCrfzeuq8lxMg=
+github.com/spf13/cast v1.10.0 h1:h2x0u2shc1QuLHfxi+cTJvs30+ZAHOGRic8uyGTDWxY=
+github.com/spf13/cast v1.10.0/go.mod h1:jNfB8QC9IA6ZuY2ZjDp0KtFO2LZZlg4S/7bzP6qqeHo=
+github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
+github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+github.com/spf13/viper v1.21.0 h1:x5S+0EU27Lbphp4UKm1C+1oQO+rKx36vfCoaVebLFSU=
+github.com/spf13/viper v1.21.0/go.mod h1:P0lhsswPGWD/1lZJ9ny3fYnVqxiegrlNrEmgLjbTCAY=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
@@ -150,6 +166,8 @@ github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO
 github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
 github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
+github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.3.0 h1:Qd2W2sQawAfG8XSvzwhBeoGq71zXOC/Q1E9y/wUcsUA=
@@ -162,6 +180,8 @@ github.com/xanzy/ssh-agent v0.3.3 h1:+/15pJfg/RsTxqYcX6fHqOXZwwMP+2VyYWJeWM2qQFM
 github.com/xanzy/ssh-agent v0.3.3/go.mod h1:6dzNDKs0J9rVPHPhaGCukekBHKqfl+L3KghI1Bc68Uw=
 go.uber.org/mock v0.5.0 h1:KAMbZvZPyBPWgD14IrIQ38QCyjwpvVVV6K/bHl1IwQU=
 go.uber.org/mock v0.5.0/go.mod h1:ge71pBPLYDk7QIi1LupWxdAykm7KIEFchiOqd6z7qMM=
+go.yaml.in/yaml/v3 v3.0.4 h1:tfq32ie2Jv2UxXFdLJdh3jXuOzWiL1fo0bu/FbuKpbc=
+go.yaml.in/yaml/v3 v3.0.4/go.mod h1:DhzuOOF2ATzADvBadXxruRBLzYTpT36CKvDb3+aBEFg=
 golang.org/x/arch v0.20.0 h1:dx1zTU0MAE98U+TQ8BLl7XsJbgze2WnNKF/8tGp/Q6c=
 golang.org/x/arch v0.20.0/go.mod h1:bdwinDaKcfZUGpH09BB7ZmOfhalA8lQdzl62l8gGWsk=
 golang.org/x/crypto v0.0.0-20220622213112-05595931fe9d/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
diff --git a/internal/config/config.go b/internal/config/config.go
new file mode 100644
index 0000000..355e23a
--- /dev/null
+++ b/internal/config/config.go
@@ -0,0 +1,116 @@
+package config
+
+import (
+	"log/slog"
+	"os"
+	"path/filepath"
+	"sync"
+
+	"github.com/spf13/viper"
+)
+
+// WindowState 定义窗口状态
+type WindowState struct {
+	Width     int  `mapstructure:"width"`
+	Height    int  `mapstructure:"height"`
+	X         int  `mapstructure:"x"`
+	Y         int  `mapstructure:"y"`
+	Maximised bool `mapstructure:"maximised"`
+}
+
+type Config struct {
+	mu          sync.RWMutex
+	WindowState WindowState `mapstructure:"window_state"`
+	SavePath    string      `mapstructure:"save_path"`
+}
+
+// 默认窗口配置
+var defaultWindowState = WindowState{
+	Width:  1024,
+	Height: 768,
+	X:      -1,
+	Y:      -1,
+}
+
+func getConfigDir() string {
+	configPath, err := os.UserConfigDir()
+	if err != nil {
+		configPath = "/tmp"
+	}
+	return filepath.Join(configPath, "mesh-drop")
+}
+
+func getUserHomeDir() string {
+	home, err := os.UserHomeDir()
+	if err != nil {
+		return "/tmp"
+	}
+	return home
+}
+
+// New 读取配置
+func Load() *Config {
+	configDir := getConfigDir()
+	err := os.MkdirAll(configDir, 0755)
+	if err != nil {
+		slog.Error("Failed to create config directory", "error", err)
+	}
+	configFile := filepath.Join(configDir, "config.json")
+
+	// 设置默认值
+	defaultSavePath := filepath.Join(getUserHomeDir(), "Downloads")
+	viper.SetDefault("window_state", defaultWindowState)
+	viper.SetDefault("save_path", defaultSavePath)
+
+	viper.SetConfigFile(configFile)
+	viper.SetConfigType("json")
+
+	// 尝试读取配置
+	if err := viper.ReadInConfig(); err != nil {
+		if _, ok := err.(viper.ConfigFileNotFoundError); ok {
+			slog.Info("Config file not found, using defaults")
+		} else {
+			slog.Warn("Failed to read config file, using defaults", "error", err)
+		}
+	}
+
+	var config Config
+	if err := viper.Unmarshal(&config); err != nil {
+		slog.Error("Failed to unmarshal config", "error", err)
+	}
+
+	return &config
+}
+
+// Save 保存配置到磁盘
+func (c *Config) Save() error {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+
+	configDir := getConfigDir()
+	if err := os.MkdirAll(configDir, 0755); err != nil {
+		return err
+	}
+
+	if err := viper.WriteConfig(); err != nil {
+		slog.Error("Failed to write config", "error", err)
+		return err
+	}
+
+	return nil
+}
+
+// SetSavePath 修改配置
+func (c *Config) SetSavePath(savePath string) {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	c.SavePath = savePath
+	viper.Set("save_path", savePath)
+}
+
+func (c *Config) GetSavePath() string {
+	c.mu.RLock()
+	defer c.mu.RUnlock()
+	return c.SavePath
+}
diff --git a/internal/config/window.go b/internal/config/window.go
deleted file mode 100644
index 0c29ffa..0000000
--- a/internal/config/window.go
+++ /dev/null
@@ -1,54 +0,0 @@
-package config
-
-import (
-	"encoding/json"
-	"os"
-	"path/filepath"
-)
-
-// WindowState 定义窗口状态
-type WindowState struct {
-	Width     int  `json:"width"`
-	Height    int  `json:"height"`
-	X         int  `json:"x"`
-	Y         int  `json:"y"`
-	Maximised bool `json:"maximised"`
-}
-
-// 默认窗口配置
-var DefaultWindowState = WindowState{
-	Width:  1024,
-	Height: 768,
-	X:      -1, // -1 表示让系统自动决定位置
-	Y:      -1,
-}
-
-// GetConfigPath 获取配置文件路径
-func GetConfigPath() string {
-	configDir, _ := os.UserConfigDir()
-	appDir := filepath.Join(configDir, "mesh-drop")
-	_ = os.MkdirAll(appDir, 0755)
-	return filepath.Join(appDir, "window.json")
-}
-
-// LoadWindowState 读取配置
-func LoadWindowState() WindowState {
-	path := GetConfigPath()
-	data, err := os.ReadFile(path)
-	if err != nil {
-		return DefaultWindowState
-	}
-
-	var state WindowState
-	if err := json.Unmarshal(data, &state); err != nil {
-		return DefaultWindowState
-	}
-	return state
-}
-
-// SaveWindowState 保存配置
-func SaveWindowState(state WindowState) error {
-	path := GetConfigPath()
-	data, _ := json.MarshalIndent(state, "", "  ")
-	return os.WriteFile(path, data, 0644)
-}
diff --git a/internal/transfer/server.go b/internal/transfer/server.go
index 5dbd9ae..4fb415f 100644
--- a/internal/transfer/server.go
+++ b/internal/transfer/server.go
@@ -140,7 +140,7 @@ func (s *Service) handleUpload(c *gin.Context) {
 
 	savePath := task.SavePath
 	if savePath == "" {
-		savePath = s.savePath
+		savePath = s.config.GetSavePath()
 	}
 
 	ctxReader := &ContextReader{
diff --git a/internal/transfer/service.go b/internal/transfer/service.go
index 63e55df..6436335 100644
--- a/internal/transfer/service.go
+++ b/internal/transfer/service.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"mesh-drop/internal/config"
 	"mesh-drop/internal/discovery"
 	"sync"
 
@@ -12,9 +13,9 @@ import (
 )
 
 type Service struct {
-	app      *application.App
-	port     int
-	savePath string // 默认下载目录
+	config *config.Config
+	app    *application.App
+	port   int
 
 	// pendingRequests 存储等待用户确认的通道
 	// Key: TransferID, Value: *Transfer
@@ -27,14 +28,14 @@ type Service struct {
 	cancelMap sync.Map
 }
 
-func NewService(app *application.App, port int, defaultSavePath string, discoveryService *discovery.Service) *Service {
+func NewService(config *config.Config, app *application.App, port int, discoveryService *discovery.Service) *Service {
 	gin.SetMode(gin.ReleaseMode)
 
 	return &Service{
 		app:              app,
 		port:             port,
-		savePath:         defaultSavePath,
 		discoveryService: discoveryService,
+		config:           config,
 	}
 }
 
diff --git a/main.go b/main.go
index 0addceb..599953c 100644
--- a/main.go
+++ b/main.go
@@ -7,7 +7,6 @@ import (
 	"mesh-drop/internal/discovery"
 	"mesh-drop/internal/transfer"
 	"os"
-	"path/filepath"
 
 	"github.com/wailsapp/wails/v3/pkg/application"
 	"github.com/wailsapp/wails/v3/pkg/events"
@@ -22,7 +21,7 @@ type FilesDroppedEvent struct {
 }
 
 func main() {
-	state := config.LoadWindowState()
+	conf := config.Load()
 
 	app := application.New(application.Options{
 		Name: "mesh-drop",
@@ -31,19 +30,10 @@ func main() {
 		},
 	})
 
-	// 获取用户目录
-	userHomePath, err := os.UserHomeDir()
-	if err != nil {
-		userHomePath = "/tmp/mesh-drop"
-	}
-
-	// 设置默认保存路径
-	defaultSavePath := filepath.Join(userHomePath, "Downloads")
-
 	// 创建保存路径
-	err = os.MkdirAll(defaultSavePath, 0755)
+	err := os.MkdirAll(conf.SavePath, 0755)
 	if err != nil {
-		slog.Error("Failed to create save path", "path", defaultSavePath, "error", err)
+		slog.Error("Failed to create save path", "path", conf.SavePath, "error", err)
 	}
 
 	// 文件传输端口
@@ -55,24 +45,25 @@ func main() {
 	discoveryService.Start()
 
 	// 初始化传输服务
-	transferService := transfer.NewService(app, port, defaultSavePath, discoveryService)
+	transferService := transfer.NewService(conf, app, port, discoveryService)
 	transferService.Start()
 
 	slog.Info("Backend Service Started", "discovery_port", discovery.DiscoveryPort, "transfer_port", port)
 
 	app.RegisterService(application.NewService(discoveryService))
 	app.RegisterService(application.NewService(transferService))
+	app.RegisterService(application.NewService(conf))
 
-	windows := app.Window.NewWithOptions(application.WebviewWindowOptions{
+	window := app.Window.NewWithOptions(application.WebviewWindowOptions{
 		Title:          "mesh drop",
-		Width:          state.Width,
-		Height:         state.Height,
-		X:              state.X,
-		Y:              state.Y,
+		Width:          conf.WindowState.Width,
+		Height:         conf.WindowState.Height,
+		X:              conf.WindowState.X,
+		Y:              conf.WindowState.Y,
 		EnableFileDrop: true,
 	})
 
-	windows.OnWindowEvent(events.Common.WindowFilesDropped, func(event *application.WindowEvent) {
+	window.OnWindowEvent(events.Common.WindowFilesDropped, func(event *application.WindowEvent) {
 		files := event.Context().DroppedFiles()
 		details := event.Context().DropTargetDetails()
 		app.Event.Emit("files-dropped", FilesDroppedEvent{
@@ -81,9 +72,20 @@ func main() {
 		})
 	})
 
+	window.OnWindowEvent(events.Common.WindowClosing, func(event *application.WindowEvent) {
+		x, y := window.Position()
+		width, height := window.Size()
+		conf.WindowState = config.WindowState{
+			X:      x,
+			Y:      y,
+			Width:  width,
+			Height: height,
+		}
+		_ = conf.Save()
+	})
+
 	application.RegisterEvent[FilesDroppedEvent]("files-dropped")
 
-	// Initialize structured logging
 	logger := slog.New(slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
 		Level: slog.LevelDebug,
 	}))