diff --git a/msadaptor/torch/utils/data/_utils/worker.py b/msadaptor/torch/utils/data/_utils/worker.py
index 0b04db233d032c49afdce51ba8b5d3183c39a1d2..e7a3f6326a66cf7b3877b65787ad7ed7a5c0fe27 100644
--- a/msadaptor/torch/utils/data/_utils/worker.py
+++ b/msadaptor/torch/utils/data/_utils/worker.py
@@ -15,6 +15,7 @@ import torch
 from torch._utils import ExceptionWrapper
 import torch.configs
 
+from mindspore._c_expression import disable_multi_thread
 from . import HAS_NUMPY, IS_WINDOWS, MP_STATUS_CHECK_INTERVAL, signal_handling
 
 
@@ -246,6 +247,7 @@ def _worker_loop(
     # See NOTE [ Data Loader Multiprocessing Shutdown Logic ] for details on the
     # logic of this function.
     torch.configs.set_pyboost(use_pyboost)
+    disable_multi_thread()
     try:
         # Initialize C side signal handlers for SIGBUS and SIGSEGV. Python signal
         # module's handlers are executed after Python returns from C low-level