diff --git a/python/paddle/v2/framework/tests/test_seq_conv.py b/python/paddle/v2/framework/tests/test_seq_conv.py
index 32124d0a05986bbe19263cf66dfa489c73f26100..2064c1cb1117661125312633c6aadc7631b88d73 100644
--- a/python/paddle/v2/framework/tests/test_seq_conv.py
+++ b/python/paddle/v2/framework/tests/test_seq_conv.py
@@ -130,8 +130,30 @@ class TestSeqProject(OpTest):
             max_relative_error=0.05,
             no_grad_set=set(['X', 'PaddingData']))
 
+    def test_check_grad_input_filter(self):
+        self.check_grad(
+            ['X', 'Filter'],
+            'Out',
+            max_relative_error=0.05,
+            no_grad_set=set(['PaddingData']))
+
+    def test_check_grad_padding_input(self):
+        if self.padding_trainable:
+            self.check_grad(
+                ['X', 'PaddingData'],
+                'Out',
+                max_relative_error=0.05,
+                no_grad_set=set(['Filter']))
+
+    def test_check_grad_padding_filter(self):
+        if self.padding_trainable:
+            self.check_grad(
+                ['PaddingData', 'Filter'],
+                'Out',
+                max_relative_error=0.05,
+                no_grad_set=set(['X']))
+
     def init_test_case(self):
-        self.op_type = "sequence_project"
         self.input_row = 11
         self.context_start = 0
         self.context_length = 1
@@ -144,7 +166,6 @@ class TestSeqProject(OpTest):
 
 class TestSeqProjectCase1(TestSeqProject):
     def init_test_case(self):
-        self.op_type = "sequence_project"
         self.input_row = 11
         self.context_start = -1
         self.context_length = 3
@@ -157,7 +178,6 @@ class TestSeqProjectCase1(TestSeqProject):
 
 class TestSeqProjectCase2(TestSeqProject):
     def init_test_case(self):
-        self.op_type = "sequence_project"
         self.input_row = 25
         self.context_start = 2
         self.context_length = 3