diff --git a/backend/services/cluster.go b/backend/services/cluster.go
index e6b9009..ce3acc7 100644
--- a/backend/services/cluster.go
+++ b/backend/services/cluster.go
@@ -211,6 +211,11 @@ func (s *ClusterService) Delete(id uint) error {
 	defer db.Unlock()
 	for i, c := range db.Clusters {
 		if c.ID == id {
+			for _, d := range db.Deployments {
+				if d.ClusterID != nil && *d.ClusterID == id {
+					return fmt.Errorf("仍有部署使用该集群，请先删除部署")
+				}
+			}
 			if c.KubeConfigPath != "" {
 				_ = os.Remove(c.KubeConfigPath)
 			}
diff --git a/backend/services/collector.go b/backend/services/collector.go
index 75a043a..3a9637f 100644
--- a/backend/services/collector.go
+++ b/backend/services/collector.go
@@ -488,30 +488,59 @@ func (s *CollectorService) Update(id uint, updates map[string]interface{}) error
 	return utils.ErrNotFound
 }
 
+// UninstallCollectorsForDeployment 卸载并删除某部署下的所有采集器。
+// 卸载失败时保留记录，避免远端资源失去跟踪。
+func UninstallCollectorsForDeployment(ctx context.Context, deploymentID uint) {
+	db := repository.GetDB()
+	db.RLock()
+	var targets []models.Collector
+	for _, c := range db.Collectors {
+		if c.LokiDeploymentID == deploymentID {
+			targets = append(targets, c)
+		}
+	}
+	db.RUnlock()
+
+	for i := range targets {
+		c := targets[i]
+		if err := NewCollectorDeployer(&c, c.LokiDeployment, nil).Uninstall(ctx); err != nil {
+			log.Printf("[deploy-delete] 采集器 %q 卸载失败，保留记录: %v", c.Name, err)
+			continue
+		}
+		db.Lock()
+		for j := range db.Collectors {
+			if db.Collectors[j].ID == c.ID {
+				db.Collectors = append(db.Collectors[:j], db.Collectors[j+1:]...)
+				break
+			}
+		}
+		db.RequestSave()
+		db.Unlock()
+	}
+}
+
 func (s *CollectorService) Delete(id uint) error {
 	collector, err := s.Get(id)
 	if err != nil {
 		return utils.ErrNotFound
 	}
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
+	defer cancel()
+	// 先卸载远端资源，成功后再删记录；卸载失败直接返回，避免「界面删了、远端还在」
+	if err := NewCollectorDeployer(collector, collector.LokiDeployment, nil).Uninstall(ctx); err != nil {
+		return fmt.Errorf("卸载采集器失败，未删除记录: %w", err)
+	}
 	db := repository.GetDB()
 	db.Lock()
+	defer db.Unlock()
 	for i, c := range db.Collectors {
 		if c.ID == id {
 			db.Collectors = append(db.Collectors[:i], db.Collectors[i+1:]...)
-			break
+			db.RequestSave()
+			return nil
 		}
 	}
-	db.Unlock()
-	db.RequestSave()
-	// 异步卸载（用拷贝的 collector，避免删除后取不到；失败留日志，远端不留孤儿容器也无提示）
-	go func() {
-		ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
-		defer cancel()
-		if err := NewCollectorDeployer(collector, collector.LokiDeployment, nil).Uninstall(ctx); err != nil {
-			log.Printf("[collector] 删除后卸载 %q(目标 %s)失败: %v", collector.Name, collector.Name, err)
-		}
-	}()
-	return nil
+	return utils.ErrNotFound
 }
 
 // Install 异步部署采集器
diff --git a/backend/services/deployment.go b/backend/services/deployment.go
index 67a1e4b..a4f4025 100644
--- a/backend/services/deployment.go
+++ b/backend/services/deployment.go
@@ -3,6 +3,7 @@ package services
 import (
 	"context"
 	"fmt"
+	"log"
 	"net"
 	"regexp"
 	"strconv"
@@ -315,18 +316,39 @@ func (s *DeploymentService) Delete(id uint) error {
 	if err != nil {
 		return err
 	}
-	if deployment.Mode == "host-docker" {
-		if deployment.Status == "deploying" {
-			return fmt.Errorf("部署正在进行中，请等待完成后删除")
-		}
+	if deployment.Status == "deploying" {
+		return fmt.Errorf("部署正在进行中，请等待完成后删除")
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 5*time.Minute)
+	defer cancel()
+
+	// 先卸载该部署下的采集器：它们依赖这个 Loki 实例，留着会指向不存在的服务
+	UninstallCollectorsForDeployment(ctx, id)
+
+	switch deployment.Mode {
+	case "host-docker":
 		if deployment.Status != "pending" {
-			ctx, cancel := context.WithTimeout(context.Background(), time.Minute)
-			defer cancel()
 			if err := deleteDockerLoki(ctx, deployment); err != nil {
 				return err
 			}
 		}
+	case "k8s-yaml":
+		// 停止/重启走 CleanupLoki 时保留 PVC；这里是显式删除，连数据卷一起清理
+		CleanupLoki(ctx, deployment)
+		if deployment.Cluster != nil {
+			ns := deployment.Namespace
+			if ns == "" {
+				ns = "log"
+			}
+			if err := deleteK8sResource(ctx, deployment.Cluster, "persistentvolumeclaim", ns, "loki-data"); err != nil {
+				log.Printf("[deploy-delete] 清理 PVC %s/loki-data 失败: %v", ns, err)
+			}
+		}
+	case "host-binary":
+		CleanupLoki(ctx, deployment)
 	}
+
 	db := repository.GetDB()
 	db.Lock()
 	removedName := ""
diff --git a/backend/services/host.go b/backend/services/host.go
index d5b74ed..1a7c3c1 100644
--- a/backend/services/host.go
+++ b/backend/services/host.go
@@ -186,6 +186,16 @@ func (s *HostService) Delete(id uint) error {
 	defer db.Unlock()
 	for i, h := range db.Hosts {
 		if h.ID == id {
+			for _, d := range db.Deployments {
+				if d.HostID != nil && *d.HostID == id {
+					return fmt.Errorf("仍有部署使用该主机，请先删除部署")
+				}
+			}
+			for _, c := range db.Collectors {
+				if c.HostID != nil && *c.HostID == id {
+					return fmt.Errorf("仍有采集器使用该主机，请先删除采集器")
+				}
+			}
 			db.Hosts = append(db.Hosts[:i], db.Hosts[i+1:]...)
 			db.RequestSave()
 			return nil
diff --git a/backend/services/storage.go b/backend/services/storage.go
index 002e7a9..bc4dfaf 100644
--- a/backend/services/storage.go
+++ b/backend/services/storage.go
@@ -151,6 +151,11 @@ func (s *StorageService) Delete(id uint) error {
 	defer db.Unlock()
 	for i, st := range db.Storages {
 		if st.ID == id {
+			for _, d := range db.Deployments {
+				if d.StorageConfigID == id {
+					return fmt.Errorf("仍有部署使用该存储配置，请先删除部署或改用其他存储")
+				}
+			}
 			db.Storages = append(db.Storages[:i], db.Storages[i+1:]...)
 			db.RequestSave()
 			return nil
diff --git a/docs/deployment/kubernetes.md b/docs/deployment/kubernetes.md
index 18f91a3..f91e4c3 100644
--- a/docs/deployment/kubernetes.md
+++ b/docs/deployment/kubernetes.md
@@ -193,7 +193,7 @@ metadata:
   namespace: log
 rules:
   - apiGroups: [""]
-    resources: ["pods", "pods/log", "services", "configmaps", "secrets", "persistentvolumeclaims", "events", "serviceaccounts"]
+    resources: ["pods", "pods/log", "services", "services/proxy", "configmaps", "secrets", "persistentvolumeclaims", "events", "serviceaccounts"]
     verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
   - apiGroups: ["apps"]
     resources: ["statefulsets", "daemonsets", "deployments"]
diff --git a/frontend/src/pages/clusters/components/ClusterFormDialog.tsx b/frontend/src/pages/clusters/components/ClusterFormDialog.tsx
index 593b4cd..84bbeb8 100644
--- a/frontend/src/pages/clusters/components/ClusterFormDialog.tsx
+++ b/frontend/src/pages/clusters/components/ClusterFormDialog.tsx
@@ -299,7 +299,7 @@ metadata:
   namespace: log
 rules:
   - apiGroups: [""]
-    resources: ["pods", "pods/log", "services", "configmaps", "secrets", "persistentvolumeclaims", "events", "serviceaccounts"]
+    resources: ["pods", "pods/log", "services", "services/proxy", "configmaps", "secrets", "persistentvolumeclaims", "events", "serviceaccounts"]
     verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
   - apiGroups: ["apps"]
     resources: ["statefulsets", "daemonsets", "deployments"]