diff --git a/python/paddle/fluid/tests/unittests/test_dist_fleet_ctr2.py b/python/paddle/fluid/tests/unittests/test_dist_fleet_ctr2.py
index 7cec9c936908629188eda3dfbdb51bd1aa88b331..6791d5bbe319377868e6c27d311ba5d9ec2659db 100644
--- a/python/paddle/fluid/tests/unittests/test_dist_fleet_ctr2.py
+++ b/python/paddle/fluid/tests/unittests/test_dist_fleet_ctr2.py
@@ -20,6 +20,7 @@ import tempfile
 from test_dist_fleet_base import TestFleetBase
 
 
+@unittest.skip(reason="Skip unstable ut, need paddle sync mode fix")
 class TestDistMnistSync2x2(TestFleetBase):
     def _setup_config(self):
         self._mode = "sync"
diff --git a/python/paddle/fluid/tests/unittests/test_dist_fleet_sparse_embedding_ctr.py b/python/paddle/fluid/tests/unittests/test_dist_fleet_sparse_embedding_ctr.py
index 4546c0024b887844ef249032e369c6bc2022c181..637dafe1c57e196fbd709a9afb0fc09785643c2e 100644
--- a/python/paddle/fluid/tests/unittests/test_dist_fleet_sparse_embedding_ctr.py
+++ b/python/paddle/fluid/tests/unittests/test_dist_fleet_sparse_embedding_ctr.py
@@ -28,6 +28,7 @@ from test_dist_fleet_base import TestFleetBase
 from dist_fleet_sparse_embedding_ctr import fake_ctr_reader
 
 
+@unittest.skip(reason="Skip unstable ut, need paddle sync mode fix")
 class TestDistMnistSync2x2(TestFleetBase):
     def _setup_config(self):
         self._mode = "sync"