diff --git a/python/paddle/fluid/tests/unittests/test_bilinear_interp_op.py b/python/paddle/fluid/tests/unittests/test_bilinear_interp_op.py
index 4af5f524a5eedd7af6f30f9f12678120867f5aa0..bffb4f3b666a7ddcc133b7c30fab132b49aa1d0e 100644
--- a/python/paddle/fluid/tests/unittests/test_bilinear_interp_op.py
+++ b/python/paddle/fluid/tests/unittests/test_bilinear_interp_op.py
@@ -84,18 +84,11 @@ class TestCase2(TestBilinearInterpOp):
         self.out_w = 12
 
 
-class TestCase2(TestBilinearInterpOp):
-    def init_test_case(self):
-        self.input_shape = [16, 3, 512, 1024]
-        self.out_h = 128
-        self.out_w = 256
-
-
-class TestCase2(TestBilinearInterpOp):
+class TestCase3(TestBilinearInterpOp):
     def init_test_case(self):
-        self.input_shape = [8, 1, 256, 128]
-        self.out_h = 1024
-        self.out_w = 1024
+        self.input_shape = [1, 1, 128, 64]
+        self.out_h = 64
+        self.out_w = 128
 
 
 if __name__ == "__main__":