diff --git a/kernel/model/index.go b/kernel/model/index.go
index f03446067..f93c07955 100644
--- a/kernel/model/index.go
+++ b/kernel/model/index.go
@@ -209,7 +209,7 @@ func IndexRefs() {
 // IndexEmbedBlockJob 嵌入块支持搜索 https://github.com/siyuan-note/siyuan/issues/7112
 func IndexEmbedBlockJob() {
 	embedBlocks := sql.QueryEmptyContentEmbedBlocks()
-	task.AppendTask(task.DatabaseIndexEmbedBlock, autoIndexEmbedBlock, embedBlocks)
+	task.AppendTaskWithTimeout(task.DatabaseIndexEmbedBlock, 30*time.Second, autoIndexEmbedBlock, embedBlocks)
 }
 
 func autoIndexEmbedBlock(embedBlocks []*sql.Block) {
diff --git a/kernel/model/ocr.go b/kernel/model/ocr.go
index 8ebeb4f61..f6944965e 100644
--- a/kernel/model/ocr.go
+++ b/kernel/model/ocr.go
@@ -21,7 +21,7 @@ func OCRAssetsJob() {
 		return
 	}
 
-	task.AppendTask(task.OCRImage, autoOCRAssets)
+	task.AppendTaskWithTimeout(task.OCRImage, 7*time.Second, autoOCRAssets)
 }
 
 func autoOCRAssets() {
@@ -39,7 +39,7 @@ func autoOCRAssets() {
 			util.AssetsTextsLock.Unlock()
 			util.AssetsTextsChanged = true
 
-			if 16 <= i { // 一次任务中最多处理 16 张图片，防止卡顿
+			if 4 <= i { // 一次任务中最多处理 4 张图片，防止卡顿
 				break
 			}
 		}
diff --git a/kernel/model/search.go b/kernel/model/search.go
index 4168c6b44..9d0b60ccb 100644
--- a/kernel/model/search.go
+++ b/kernel/model/search.go
@@ -97,7 +97,7 @@ func searchEmbedBlock(embedBlockID, stmt string, excludeIDs []string, headingMod
 	}
 
 	// 嵌入块支持搜索 https://github.com/siyuan-note/siyuan/issues/7112
-	task.AppendTask(task.DatabaseIndexEmbedBlock, updateEmbedBlockContent, embedBlockID, ret)
+	task.AppendTaskWithTimeout(task.DatabaseIndexEmbedBlock, 30*time.Second, updateEmbedBlockContent, embedBlockID, ret)
 
 	// 添加笔记本名称
 	var boxIDs []string
diff --git a/kernel/task/queue.go b/kernel/task/queue.go
index fcc18d274..86d6b290f 100644
--- a/kernel/task/queue.go
+++ b/kernel/task/queue.go
@@ -37,9 +37,14 @@ type Task struct {
 	Handler reflect.Value
 	Args    []interface{}
 	Created time.Time
+	Timeout time.Duration
 }
 
 func AppendTask(action string, handler interface{}, args ...interface{}) {
+	AppendTaskWithTimeout(action, 24*time.Hour, handler, args...)
+}
+
+func AppendTaskWithTimeout(action string, timeout time.Duration, handler interface{}, args ...interface{}) {
 	if util.IsExiting {
 		//logging.LogWarnf("task queue is paused, action [%s] will be ignored", action)
 		return
@@ -53,16 +58,13 @@ func AppendTask(action string, handler interface{}, args ...interface{}) {
 
 	queueLock.Lock()
 	defer queueLock.Unlock()
-	taskQueue = append(taskQueue, newTask(action, handler, args...))
-}
-
-func newTask(action string, handler interface{}, args ...interface{}) *Task {
-	return &Task{
+	taskQueue = append(taskQueue, &Task{
 		Action:  action,
+		Timeout: timeout,
 		Handler: reflect.ValueOf(handler),
 		Args:    args,
 		Created: time.Now(),
-	}
+	})
 }
 
 func getCurrentActions() (ret []string) {
@@ -166,8 +168,6 @@ func ExecTaskJob() {
 	execTask(task)
 }
 
-var currentTaskAction string
-
 func popTask() (ret *Task) {
 	queueLock.Lock()
 	defer queueLock.Unlock()
@@ -181,6 +181,8 @@ func popTask() (ret *Task) {
 	return
 }
 
+var currentTaskAction string
+
 func execTask(task *Task) {
 	defer logging.Recover()
 
@@ -195,7 +197,7 @@ func execTask(task *Task) {
 
 	currentTaskAction = task.Action
 
-	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	ctx, cancel := context.WithTimeout(context.Background(), task.Timeout)
 	defer cancel()
 	ch := make(chan bool, 1)
 	go func() {