diff --git a/cmd/sysmonitord/main.go b/cmd/sysmonitord/main.go
index 51a59c3..d0c78c8 100644
--- a/cmd/sysmonitord/main.go
+++ b/cmd/sysmonitord/main.go
@@ -50,7 +50,7 @@ func main() {
 		log.Fatalf("[启动错误]下载配置失败: %v", err)
 	}
 
-	CenterServerURL := determineServerURL(officialCfg, userCfg)
+	CenterServerURL := determineServerURL(userCfg)
 
 	log.Println("[启动流程] 2/6: 初始化白名单判定引擎...")
 	wlManager := whitelist.NewManager(officialCfg, userCfg)
@@ -168,7 +168,7 @@ func main() {
 	log.Println("[守护进程] 已成功停止，安全退出程序。")
 }
 
-func determineServerURL(officialCfg config.OfficialConfig, userCfg config.UserConfig) string {
+func determineServerURL(userCfg config.UserConfig) string {
 	// 服务器地址仅从用户配置获取（符合 ARCHITECTURE.md 规范）
 	if userCfg.Connection.CenterServerURL != "" {
 		return userCfg.Connection.CenterServerURL
diff --git a/internal/agent/identity.go b/internal/agent/identity.go
new file mode 100644
index 0000000..49d2a98
--- /dev/null
+++ b/internal/agent/identity.go
@@ -0,0 +1,101 @@
+package agent
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"runtime"
+	"strings"
+)
+
+type Identity struct {
+	Hostname string `json:"hostname"`
+	MACAddr  string `json:"mac_addr"`
+	AgentID  string `json:"agent_id"`
+	IPAddr   string `json:"ip_addr"`
+	OS       string `json:"os"`
+	Arch     string `json:"arch"`
+	PID      int    `json:"pid"`
+}
+
+func GetIdentity() (*Identity, error) {
+	hostname, err := os.Hostname()
+	if err != nil {
+		return nil, fmt.Errorf("[Agent]获取主机名失败: %v", err)
+	}
+
+	mac, err := getPrimaryMAC()
+	if err != nil {
+		return nil, fmt.Errorf("[Agent]获取MAC地址失败: %v", err)
+	}
+
+	ips, err := getIPAddrs()
+	if err != nil {
+		return nil, fmt.Errorf("[Agent]获取IP地址失败: %v", err)
+	}
+
+	AgentID := generateAgentID(hostname, mac)
+
+	return &Identity{
+		Hostname: hostname,
+		MACAddr:  mac,
+		IPAddr:   ips[0],
+		AgentID:  AgentID,
+		OS:       runtime.GOOS,
+		Arch:     runtime.GOARCH,
+		PID:      os.Getpid(),
+	}, nil
+}
+
+func getPrimaryMAC() (string, error) {
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		return "", fmt.Errorf("[Agent]获取网络接口失败: %v", err)
+	}
+
+	for _, iface := range interfaces {
+		if iface.Flags&net.FlagLoopback != 0 {
+			continue // 跳过回环接口
+		}
+
+		mac := iface.HardwareAddr.String()
+		if mac == "" {
+			continue // 跳过没有MAC地址的接口
+		}
+
+		if iface.Flags&net.FlagUp != 0 {
+			return mac, nil // 返回第一个活动接口的MAC地址
+		}
+	}
+
+	for _, iface := range interfaces {
+		if iface.Flags&net.FlagLoopback == 0 && iface.HardwareAddr.String() != "" {
+			return iface.HardwareAddr.String(), nil // 返回第一个非回环接口的MAC地址
+		}
+	}
+	return "", fmt.Errorf("[Agent]未找到有效的网络接口")
+}
+
+func getIPAddrs() ([]string, error) {
+	var ips []string
+
+	addrs, err := net.InterfaceAddrs()
+	if err != nil {
+		return nil, fmt.Errorf("[Agent]获取IP地址失败: %v", err)
+	}
+
+	for _, addr := range addrs {
+		if ipnet, ok := addr.(*net.IPNet); ok && !ipnet.IP.IsLoopback() {
+			if ipnet.IP.To4() != nil {
+				ips = append(ips, ipnet.IP.String())
+			}
+		}
+	}
+
+	return ips, nil
+}
+
+func generateAgentID(hostname, mac string) string {
+	macFormat := strings.ToLower(strings.ReplaceAll(mac, ":", ""))
+	return fmt.Sprintf("%s-%s", hostname, macFormat)
+}
diff --git a/internal/network/client.go b/internal/network/client.go
index 320f1b7..b74fadc 100644
--- a/internal/network/client.go
+++ b/internal/network/client.go
@@ -3,14 +3,17 @@ package network
 import (
 	"encoding/json"
 	"log"
+	"net/url"
 	"sync"
 	"time"
 
 	"github.com/gorilla/websocket"
+	"github.com/wuko233/sysmonitord/internal/agent"
 )
 
 type ClientConfig struct {
 	ServerURL    string
+	AgentID      string
 	SendInterval time.Duration
 	BufferSize   int
 }
@@ -24,20 +27,33 @@ type WSClient struct {
 	stopChan       chan struct{}
 	handler        MessageHandler
 	reconnectDelay time.Duration // 指数退避延迟
+	agentIdentity  *agent.Identity
 }
 
 func NewWSClient(cfg ClientConfig) *WSClient {
 	if cfg.BufferSize == 0 {
 		cfg.BufferSize = 100
 	}
+
+	agentIdentity, err := agent.GetIdentity()
+	if err != nil {
+		log.Fatalf("[网络] 获取代理身份信息失败: %v", err)
+	}
+	cfg.AgentID = agentIdentity.AgentID
+
 	return &WSClient{
 		config:         cfg,
 		sendChan:       make(chan Packet, cfg.BufferSize),
 		stopChan:       make(chan struct{}),
 		reconnectDelay: 1 * time.Second, // 初始延迟 1秒
+		agentIdentity:  agentIdentity,
 	}
 }
 
+func (c *WSClient) GetAgentIdentity() *agent.Identity {
+	return c.agentIdentity
+}
+
 // SetHandler 设置消息处理器
 func (c *WSClient) SetHandler(handler MessageHandler) {
 	c.handler = handler
@@ -93,9 +109,9 @@ func (c *WSClient) sendRaw(packet Packet) {
 
 func (c *WSClient) connectionLoop() {
 	const (
-		initialDelay   = 1 * time.Second
-		maxDelay       = 60 * time.Second
-		backoffFactor  = 2.0
+		initialDelay  = 1 * time.Second
+		maxDelay      = 60 * time.Second
+		backoffFactor = 2.0
 	)
 
 	for {
@@ -183,7 +199,9 @@ func (c *WSClient) closeConn() {
 }
 
 func (c *WSClient) connect() error {
-	conn, _, err := websocket.DefaultDialer.Dial(c.config.ServerURL, nil)
+	serverURL := c.buildURL()
+
+	conn, _, err := websocket.DefaultDialer.Dial(serverURL, nil)
 	if err != nil {
 		return err
 	}
@@ -203,3 +221,19 @@ func (c *WSClient) connect() error {
 	log.Printf("[网络] 成功连接到服务器: %s", c.config.ServerURL)
 	return nil
 }
+
+func (c *WSClient) buildURL() string {
+	u, err := url.Parse(c.config.ServerURL)
+	if err != nil {
+		log.Printf("[网络] 解析服务器URL失败: %v", err)
+		return c.config.ServerURL
+	}
+
+	q := u.Query()
+
+	q.Set("agent_id", c.config.AgentID)
+
+	u.RawQuery = q.Encode()
+
+	return u.String()
+}