diff --git a/rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs b/rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs
index fe45865a..4a40d4e9 100644
--- a/rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs
+++ b/rocketmq-broker/src/processor/processor_service/pop_buffer_merge_service.rs
@@ -207,7 +207,7 @@ impl<MS: MessageStore> PopBufferMergeService<MS> {
         let queue = self.commit_offsets.get(lock_key);
         if let Some(queue) = queue {
             let queue = queue.value();
-            let queue = queue.get_queue();
+            let queue = queue.get().lock();
             if queue.is_empty() {
                 return -1;
             }
@@ -449,7 +449,8 @@ impl<MS: MessageStore> PopBufferMergeService<MS> {
         let mut count = 0;
         for entry in self.commit_offsets.iter() {
             let queue = entry.value();
-            count += queue.get_queue().len();
+            let guard = queue.get().lock();
+            count += guard.len();
         }
         count
     }
@@ -548,11 +549,12 @@ impl<MS: MessageStore> PopBufferMergeService<MS> {
     }
 
     fn put_offset_queue(&mut self, point_wrapper: PopCheckPointWrapper) -> bool {
-        let mut queue = self
+        let queue = self
             .commit_offsets
             .entry(point_wrapper.lock_key.clone())
             .or_insert(QueueWithTime::new());
-        queue.get_queue_mut().push_back(point_wrapper);
+        let mut guard = queue.get().lock();
+        guard.push_back(point_wrapper);
         true
     }
 
@@ -713,14 +715,14 @@ fn is_ck_done_for_finish(point_wrapper: &PopCheckPointWrapper) -> bool {
 }
 
 pub struct QueueWithTime<T> {
-    queue: VecDeque<T>,
+    queue: Arc<parking_lot::Mutex<VecDeque<T>>>,
     time: u64,
 }
 
 impl<T> QueueWithTime<T> {
     pub fn new() -> Self {
         Self {
-            queue: VecDeque::new(),
+            queue: Arc::new(parking_lot::Mutex::new(VecDeque::new())),
             time: get_current_millis(),
         }
     }
@@ -733,13 +735,9 @@ impl<T> QueueWithTime<T> {
         self.time
     }
 
-    pub fn get_queue(&self) -> &VecDeque<T> {
+    pub fn get(&self) -> &Arc<parking_lot::Mutex<VecDeque<T>>> {
         &self.queue
     }
-
-    pub fn get_queue_mut(&mut self) -> &mut VecDeque<T> {
-        &mut self.queue
-    }
 }
 
 pub struct PopCheckPointWrapper {
@@ -956,7 +954,8 @@ mod tests {
     #[test]
     fn queue_with_time_initializes_correctly() {
         let queue_with_time: QueueWithTime<i32> = QueueWithTime::new();
-        assert!(queue_with_time.get_queue().is_empty());
+        let guard = queue_with_time.get().lock();
+        assert!(guard.is_empty());
         assert!(queue_with_time.get_time() > 0);
     }
 
@@ -969,8 +968,9 @@ mod tests {
 
     #[test]
     fn get_queue_mut_returns_mutable_reference() {
-        let mut queue_with_time: QueueWithTime<i32> = QueueWithTime::new();
-        queue_with_time.get_queue_mut().push_back(1);
-        assert_eq!(queue_with_time.get_queue().len(), 1);
+        let queue_with_time: QueueWithTime<i32> = QueueWithTime::new();
+        let mut guard = queue_with_time.get().lock();
+        guard.push_back(1);
+        assert_eq!(guard.len(), 1);
     }
 }