diff --git a/tf_adapter/kernels/aicpu/host_queue_dataset_op.cc b/tf_adapter/kernels/aicpu/host_queue_dataset_op.cc
index f032e347fcb918dc9baf4d059d6b3dd4aa2b045d..6f56379182ab4d15cf5dd7bc6c29af16abab291f 100644
--- a/tf_adapter/kernels/aicpu/host_queue_dataset_op.cc
+++ b/tf_adapter/kernels/aicpu/host_queue_dataset_op.cc
@@ -13,6 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include <sched.h>
 #include <thread>
 #include <dlfcn.h>
 #include <vector>
@@ -280,6 +281,14 @@ class HostQueueDatasetOp : public DatasetOpKernel {
                                                         dataset()->device_id_,
                                                         dataset()->local_device_list_,
                                                         dataset()->channel_name_)) {
+        size_t output_shape_size = dataset()->output_types_.size();
+        for (size_t i = 0UL; i < output_shape_size; i++) {
+          DataType tensor_data_type = dataset()->output_types_.at(i);
+          if (tensor_data_type == DT_STRING) {
+            is_hold_data_trans = true;
+            break;
+          }
+        }
       }
 
       ~Iterator() override {
@@ -581,7 +590,10 @@ class HostQueueDatasetOp : public DatasetOpKernel {
 
       Status SendDataByAclQueue(const vector<Tensor> &args, const acltdtTensorType &data_type) {
         Status status;
+        aclError acl_status;
+        size_t size;
         bool is_need_resend = false;
+        bool is_need_recompute_mbuf = false;
         do {
           {
             mutex_lock lck(mu_);
@@ -589,8 +601,29 @@ class HostQueueDatasetOp : public DatasetOpKernel {
               break;
             }
           }
-          status = SendTensorsByAcl(acl_handle_, data_type, args, is_need_resend);
-        } while (status.ok() && is_need_resend);
+          if (!is_hold_data_trans || is_need_resend) {
+            status = SendTensorsByAcl(acl_handle_, data_type, args, is_need_resend);
+          } else {
+            acl_status = acltdtQueryChannelSize(acl_handle_, &size);
+            if (acl_status != ACL_SUCCESS) {
+              return errors::InvalidArgument("Failed to get the mbuf size!");
+            }
+            if (size <= 1 || GetMbufTotalBytes(size) <= kMaxBytes) {
+              status = SendTensorsByAcl(acl_handle_, data_type, args, is_need_resend);
+              is_need_recompute_mbuf = false;
+            } else {
+                is_need_recompute_mbuf = true;
+                sched_yield();
+              }
+            }
+        } while ((status.ok() && is_need_resend) || is_need_recompute_mbuf);
+
+        uint64_t bytes_sum = 0ULL;
+        for (auto &tensor : args) {
+          bytes_sum += tensor.TotalBytes();
+        }
+        args_bytes[args_bytes_rear] = bytes_sum;
+        args_bytes_rear = (args_bytes_rear + 1) % kStringTypeDepth;
         return status;
       }
 
@@ -643,6 +676,15 @@ class HostQueueDatasetOp : public DatasetOpKernel {
         return true;
       }
 
+      uint64_t GetMbufTotalBytes(size_t size) {
+        uint64_t sum = 0;
+        for (size_t i = 1; i <= size ; i++) {
+          size_t index = (args_bytes_rear - i + kStringTypeDepth) % kStringTypeDepth;
+          sum += args_bytes[index];
+        }
+        return sum;
+      }
+
       void SendDataByQueueThread(const std::shared_ptr<IteratorContext> &ctx) {
         ADP_LOG(INFO) << "Begin to send data to the NPU. ";
         rtError_t rt = rtSetDevice(dataset()->device_id_);
@@ -976,6 +1018,9 @@ class HostQueueDatasetOp : public DatasetOpKernel {
       acltdtChannelHandle *acl_handle_;
       uint32_t queue_id_;
       int active_thread_num = 0;
+      uint64_t args_bytes[kStringTypeDepth];
+      int args_bytes_rear = 0;
+      bool is_hold_data_trans = false;
     };
     const std::vector<DatasetBase *> inputs_;
     std::string channel_name_;
diff --git a/tf_adapter/tests/depends/ascendcl/src/ascendcl_stub.cc b/tf_adapter/tests/depends/ascendcl/src/ascendcl_stub.cc
index 52109405e46bad63ac6784e42f195a288f2ca69d..87862c1d09ac82dd67c0d88dad32495b81d90131 100644
--- a/tf_adapter/tests/depends/ascendcl/src/ascendcl_stub.cc
+++ b/tf_adapter/tests/depends/ascendcl/src/ascendcl_stub.cc
@@ -103,6 +103,10 @@ aclError aclrtResetDevice(int32_t deviceId) {
     return ACL_SUCCESS;
 }
 
+aclError acltdtQueryChannelSize(const acltdtChannelHandle *handle, size_t *size) {
+    return ACL_SUCCESS;
+}
+
 acltdtChannelHandle *acltdtCreateChannelWithCapacity(uint32_t deviceId,
                                                      const char *name,
                                                      size_t capacity) {