diff --git a/python/paddle/fluid/tests/unittests/test_tensordot.py b/python/paddle/fluid/tests/unittests/test_tensordot.py
index b345c0a3d6caea5c0e5e9f64003a914b54f39467..4c647a1df17af62940a7dbbb9cff8f49fb01adc3 100644
--- a/python/paddle/fluid/tests/unittests/test_tensordot.py
+++ b/python/paddle/fluid/tests/unittests/test_tensordot.py
@@ -19,6 +19,8 @@ import numpy as np
 import paddle
 from paddle.fluid import core
 
+np.random.seed(2021)
+
 
 def tensordot_np(x, y, axes):
     if isinstance(axes, paddle.fluid.framework.Variable):