diff --git a/core/service_scanner.go b/core/service_scanner.go
index cc13a91..cc6bc53 100644
--- a/core/service_scanner.go
+++ b/core/service_scanner.go
@@ -250,28 +250,44 @@ func (s *ServiceScanStrategy) shouldPerformLivenessCheck(hosts []string, config
 }
 
 // discoverAlivePorts 发现存活的端口
+// 执行正常端口扫描后，合并预设的 host:port（来自项目缓存或 CLI），确保不遗漏
 func (s *ServiceScanStrategy) discoverAlivePorts(ctx context.Context, hosts []string, session *common.ScanSession) []string {
 	config := session.Config
 	state := session.State
 	var alivePorts []string
 
-	// 如果已经有明确指定的host:port，直接使用（让后续SmartIdentify统一验证和识别）
-	hostPorts := state.GetHostPorts()
-	if len(hostPorts) > 0 {
-		alivePorts = hostPorts
-		common.LogInfo(i18n.Tr("alive_ports_count", len(alivePorts)))
-		state.ClearHostPorts()
-		return alivePorts
-	}
-
-	// 根据扫描模式选择端口扫描方式
+	// 正常端口扫描
 	if len(hosts) > 0 {
 		alivePorts = EnhancedPortScan(ctx, hosts, config.Target.Ports, int64(config.Timeout.Seconds()), session)
 	}
 
+	// 合并预设的 host:port（项目缓存 / CLI 注入）
+	hostPorts := state.GetHostPorts()
+	if len(hostPorts) > 0 {
+		alivePorts = mergeHostPorts(alivePorts, hostPorts)
+		common.LogInfo(i18n.Tr("alive_ports_count", len(alivePorts)))
+		state.ClearHostPorts()
+	}
+
 	return alivePorts
 }
 
+// mergeHostPorts 合并两个 host:port 列表并去重
+func mergeHostPorts(a, b []string) []string {
+	seen := make(map[string]struct{}, len(a)+len(b))
+	for _, s := range a {
+		seen[s] = struct{}{}
+	}
+	for _, s := range b {
+		seen[s] = struct{}{}
+	}
+	result := make([]string, 0, len(seen))
+	for s := range seen {
+		result = append(result, s)
+	}
+	return result
+}
+
 // convertToTargetInfos 将端口列表转换为目标信息
 func (s *ServiceScanStrategy) convertToTargetInfos(ports []string, baseInfo common.HostInfo) []common.HostInfo {
 	var infos []common.HostInfo
diff --git a/web/api/project.go b/web/api/project.go
new file mode 100644
index 0000000..1469384
--- /dev/null
+++ b/web/api/project.go
@@ -0,0 +1,293 @@
+//go:build web
+
+package api
+
+import (
+	"crypto/rand"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"path/filepath"
+	"strings"
+	"sync"
+	"time"
+)
+
+// ProjectCache 项目缓存：跨扫描持久化已知资产
+type ProjectCache struct {
+	ID        string           `json:"id"`
+	Name      string           `json:"name"`
+	Hosts     map[string]int64 `json:"hosts"`      // IP → 最后发现时间戳(unix)
+	Ports     map[string]int64 `json:"ports"`       // "IP:Port" → 最后发现时间戳(unix)
+	Results   []ResultItem     `json:"results"`     // 历史结果(合并去重)
+	CreatedAt time.Time        `json:"created_at"`
+	UpdatedAt time.Time        `json:"updated_at"`
+}
+
+// ProjectStore 项目存储管理
+type ProjectStore struct {
+	mu       sync.RWMutex
+	projects map[string]*ProjectCache
+	dir      string
+}
+
+var globalProjectStore *ProjectStore
+
+func init() {
+	home, _ := os.UserHomeDir()
+	dir := filepath.Join(home, ".fscan", "projects")
+	globalProjectStore = &ProjectStore{
+		projects: make(map[string]*ProjectCache),
+		dir:      dir,
+	}
+	globalProjectStore.loadAll()
+}
+
+// loadAll 从磁盘加载所有项目
+func (ps *ProjectStore) loadAll() {
+	_ = os.MkdirAll(ps.dir, 0750)
+	entries, err := os.ReadDir(ps.dir)
+	if err != nil {
+		return
+	}
+	for _, e := range entries {
+		if e.IsDir() || !strings.HasSuffix(e.Name(), ".json") {
+			continue
+		}
+		data, err := os.ReadFile(filepath.Join(ps.dir, e.Name()))
+		if err != nil {
+			continue
+		}
+		var p ProjectCache
+		if json.Unmarshal(data, &p) == nil && p.ID != "" {
+			ps.projects[p.ID] = &p
+		}
+	}
+}
+
+// save 持久化单个项目
+func (ps *ProjectStore) save(p *ProjectCache) error {
+	_ = os.MkdirAll(ps.dir, 0750)
+	data, err := json.MarshalIndent(p, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(filepath.Join(ps.dir, p.ID+".json"), data, 0640)
+}
+
+// Get 获取项目
+func (ps *ProjectStore) Get(id string) *ProjectCache {
+	ps.mu.RLock()
+	defer ps.mu.RUnlock()
+	return ps.projects[id]
+}
+
+// List 列出所有项目
+func (ps *ProjectStore) List() []*ProjectCache {
+	ps.mu.RLock()
+	defer ps.mu.RUnlock()
+	list := make([]*ProjectCache, 0, len(ps.projects))
+	for _, p := range ps.projects {
+		list = append(list, p)
+	}
+	return list
+}
+
+// Create 创建项目
+func (ps *ProjectStore) Create(name string) (*ProjectCache, error) {
+	ps.mu.Lock()
+	defer ps.mu.Unlock()
+
+	id := genID()
+	p := &ProjectCache{
+		ID:        id,
+		Name:      name,
+		Hosts:     make(map[string]int64),
+		Ports:     make(map[string]int64),
+		Results:   make([]ResultItem, 0),
+		CreatedAt: time.Now(),
+		UpdatedAt: time.Now(),
+	}
+	if err := ps.save(p); err != nil {
+		return nil, err
+	}
+	ps.projects[id] = p
+	return p, nil
+}
+
+// Delete 删除项目
+func (ps *ProjectStore) Delete(id string) error {
+	ps.mu.Lock()
+	defer ps.mu.Unlock()
+	delete(ps.projects, id)
+	return os.Remove(filepath.Join(ps.dir, id+".json"))
+}
+
+// MergeResults 将扫描结果合并进项目缓存
+func (ps *ProjectStore) MergeResults(id string, items []ResultItem) error {
+	ps.mu.Lock()
+	defer ps.mu.Unlock()
+
+	p, ok := ps.projects[id]
+	if !ok {
+		return fmt.Errorf("project not found: %s", id)
+	}
+
+	now := time.Now().Unix()
+
+	// 构建已有结果的去重集合
+	seen := make(map[string]bool, len(p.Results))
+	for _, r := range p.Results {
+		seen[resultKey(r)] = true
+	}
+
+	for _, item := range items {
+		// 更新资产缓存
+		switch strings.ToLower(item.Type) {
+		case "host":
+			if item.Target != "" {
+				p.Hosts[item.Target] = now
+			}
+		case "port", "service":
+			if item.Target != "" {
+				p.Ports[item.Target] = now
+				// 提取 host 部分也记入 Hosts
+				if host := extractHost(item.Target); host != "" {
+					p.Hosts[host] = now
+				}
+			}
+		}
+
+		// 合并去重
+		key := resultKey(item)
+		if !seen[key] {
+			seen[key] = true
+			p.Results = append(p.Results, item)
+		}
+	}
+
+	p.UpdatedAt = time.Now()
+	return ps.save(p)
+}
+
+// CachedHostPorts 返回缓存的 host:port 列表（供注入扫描）
+func (ps *ProjectStore) CachedHostPorts(id string) []string {
+	ps.mu.RLock()
+	defer ps.mu.RUnlock()
+
+	p, ok := ps.projects[id]
+	if !ok {
+		return nil
+	}
+	result := make([]string, 0, len(p.Ports))
+	for hp := range p.Ports {
+		result = append(result, hp)
+	}
+	return result
+}
+
+func resultKey(r ResultItem) string {
+	return fmt.Sprintf("%s|%s|%s", r.Type, r.Target, r.Status)
+}
+
+func genID() string {
+	b := make([]byte, 8)
+	_, _ = rand.Read(b)
+	return fmt.Sprintf("%x", b)
+}
+
+// ─── HTTP Handlers ──────────────────────────────────────────────────────────
+
+type ProjectHandler struct {
+	store *ProjectStore
+}
+
+func NewProjectHandler() *ProjectHandler {
+	return &ProjectHandler{store: globalProjectStore}
+}
+
+// List 列出所有项目
+func (h *ProjectHandler) List(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	writeJSON(w, http.StatusOK, h.store.List())
+}
+
+// Create 创建项目
+func (h *ProjectHandler) Create(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	var req struct {
+		Name string `json:"name"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil || req.Name == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "name is required"})
+		return
+	}
+	p, err := h.store.Create(req.Name)
+	if err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
+		return
+	}
+	writeJSON(w, http.StatusOK, p)
+}
+
+// Get 获取项目详情
+func (h *ProjectHandler) Get(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	id := r.URL.Query().Get("id")
+	p := h.store.Get(id)
+	if p == nil {
+		writeJSON(w, http.StatusNotFound, map[string]string{"error": "project not found"})
+		return
+	}
+	writeJSON(w, http.StatusOK, p)
+}
+
+// Delete 删除项目
+func (h *ProjectHandler) Delete(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	var req struct {
+		ID string `json:"id"`
+	}
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil || req.ID == "" {
+		writeJSON(w, http.StatusBadRequest, map[string]string{"error": "id is required"})
+		return
+	}
+	if err := h.store.Delete(req.ID); err != nil {
+		writeJSON(w, http.StatusInternalServerError, map[string]string{"error": err.Error()})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]string{"status": "deleted"})
+}
+
+// Cache 查看项目缓存摘要
+func (h *ProjectHandler) Cache(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodGet {
+		http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+		return
+	}
+	id := r.URL.Query().Get("id")
+	p := h.store.Get(id)
+	if p == nil {
+		writeJSON(w, http.StatusNotFound, map[string]string{"error": "project not found"})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]interface{}{
+		"hosts":        len(p.Hosts),
+		"ports":        len(p.Ports),
+		"results":      len(p.Results),
+		"cached_ports": h.store.CachedHostPorts(id),
+	})
+}
diff --git a/web/api/router.go b/web/api/router.go
index f32a4d0..b2cc0d5 100644
--- a/web/api/router.go
+++ b/web/api/router.go
@@ -27,6 +27,14 @@ func RegisterRoutes(mux *http.ServeMux, hub *ws.Hub) {
 	mux.HandleFunc("/api/config/presets", configHandler.Presets)
 	mux.HandleFunc("/api/config/plugins", configHandler.Plugins)
 
+	// 项目缓存
+	projectHandler := NewProjectHandler()
+	mux.HandleFunc("/api/projects", projectHandler.List)
+	mux.HandleFunc("/api/projects/create", projectHandler.Create)
+	mux.HandleFunc("/api/projects/get", projectHandler.Get)
+	mux.HandleFunc("/api/projects/delete", projectHandler.Delete)
+	mux.HandleFunc("/api/projects/cache", projectHandler.Cache)
+
 	// 系统信息
 	mux.HandleFunc("/api/system/info", systemInfo)
 	mux.HandleFunc("/api/health", healthCheck)
diff --git a/web/api/scan.go b/web/api/scan.go
index 9cf1b68..4dc75b5 100644
--- a/web/api/scan.go
+++ b/web/api/scan.go
@@ -51,6 +51,9 @@ type ScanRequest struct {
 	PocName  string `json:"poc_name"`
 	PocFull  bool   `json:"poc_full"`
 	DisablePoc bool `json:"disable_poc"`
+
+	// 项目缓存
+	ProjectID string `json:"project_id,omitempty"`
 }
 
 // ScanStatus 扫描状态响应
@@ -215,6 +218,13 @@ func (h *ScanHandler) runScan(req ScanRequest) {
 	common.SetGlobalConfig(config)
 	common.SetGlobalState(state)
 
+	// 项目缓存注入：把已知的 host:port 加入扫描目标
+	if req.ProjectID != "" {
+		if cached := globalProjectStore.CachedHostPorts(req.ProjectID); len(cached) > 0 {
+			state.SetHostPorts(cached)
+		}
+	}
+
 	// 设置WebSocket结果回调
 	common.SetResultCallback(func(result interface{}) {
 		item := h.results.Add(result)
@@ -225,6 +235,14 @@ func (h *ScanHandler) runScan(req ScanRequest) {
 
 	// 执行扫描
 	core.RunScan(ctx, info, session)
+
+	// 项目缓存回写：合并本次扫描结果
+	if req.ProjectID != "" {
+		items := h.results.List()
+		if len(items) > 0 {
+			_ = globalProjectStore.MergeResults(req.ProjectID, items)
+		}
+	}
 }
 
 // Stop 停止扫描