diff --git a/test/legacy_test/test_lu_op.py b/test/legacy_test/test_lu_op.py
index a99b7bc3175c7..27f6505641c63 100644
--- a/test/legacy_test/test_lu_op.py
+++ b/test/legacy_test/test_lu_op.py
@@ -195,6 +195,7 @@ def run_lu_dygraph(shape, dtype):
                 np_dtype = np.float32
             elif dtype == "float64":
                 np_dtype = np.float64
+            np.random.seed(1024)
             a = np.random.rand(*shape).astype(np_dtype)
             m = a.shape[-2]
             n = a.shape[-1]