diff --git a/internal/plugin/manager.go b/internal/plugin/manager.go
index fecc8c31e0a44c07f60dc35d1ea15b3fe53700db..f8d2d0f4ea554e6518fb59375eb78a71449a0839 100644
--- a/internal/plugin/manager.go
+++ b/internal/plugin/manager.go
@@ -176,12 +176,26 @@ func (m *Manager) Stop() {
 	// 关闭schedule
 	m.Cron.Stop()
 
-	// 退出所有正在执行的插件
-	for _, rp := range m.RunningPlugins {
+	// 在锁内复制运行列表，在锁外停止进程，避免与清理协程并发读写 map，
+	// 同时不让可能阻塞的进程停止操作长期占用 Manager.Lock。
+	for _, rp := range m.runningPluginsSnapshot() {
 		rp.Stop()
 	}
 
-	m.innerCancel()
+	if m.innerCancel != nil {
+		m.innerCancel()
+	}
+}
+
+func (m *Manager) runningPluginsSnapshot() []*RunningPlugin {
+	m.Lock.Lock()
+	defer m.Lock.Unlock()
+
+	running := make([]*RunningPlugin, 0, len(m.RunningPlugins))
+	for _, rp := range m.RunningPlugins {
+		running = append(running, rp)
+	}
+	return running
 }
 
 // RunPlugin 在独立进程组中拉起插件子进程（Setpgid=true，
diff --git a/internal/plugin/manager_test.go b/internal/plugin/manager_test.go
index 53fa0105b4aafb23200ca87600936d51f5759205..d184e9d124cab69ffa572045280fc1b238852f10 100644
--- a/internal/plugin/manager_test.go
+++ b/internal/plugin/manager_test.go
@@ -3,12 +3,37 @@ package plugin
 import (
 	"os"
 	"path/filepath"
+	"sync"
 	"testing"
 	"time"
 
 	"gitee.com/OpenCloudOS/ocmanager/agent/internal/config"
 )
 
+func TestManagerRunningPluginsSnapshotConcurrent(t *testing.T) {
+	mgr := &Manager{RunningPlugins: make(map[string]*RunningPlugin)}
+	const iterations = 1000
+	var wg sync.WaitGroup
+	wg.Add(1)
+	go func() {
+		defer wg.Done()
+		for i := 0; i < iterations; i++ {
+			mgr.Lock.Lock()
+			mgr.RunningPlugins["demo"] = &RunningPlugin{Plugin: &Plugin{Name: "demo"}}
+			delete(mgr.RunningPlugins, "demo")
+			mgr.Lock.Unlock()
+		}
+	}()
+	for i := 0; i < iterations; i++ {
+		for _, rp := range mgr.runningPluginsSnapshot() {
+			if rp == nil {
+				t.Fatal("snapshot contains a nil running plugin")
+			}
+		}
+	}
+	wg.Wait()
+}
+
 // writePluginYAML 在指定目录下写入一个插件 yaml 文件。
 func writePluginYAML(t *testing.T, dir, fileName, content string) {
 	t.Helper()