diff --git a/tools/get_pr_ut.py b/tools/get_pr_ut.py
index 81d02b996842b1e9376b1d11ac67a26b2e8953e9..373ff56135ec45d9fe578c159c39b9c5f2857911 100644
--- a/tools/get_pr_ut.py
+++ b/tools/get_pr_ut.py
@@ -264,6 +264,21 @@ class PRChecker(object):
                 all_counts = line.split()[-1]
         return int(all_counts)
 
+    def file_is_unnit_test(self, filename):
+        #get all testcases by ctest-N
+        all_ut_file = '%s/build/all_ut_file' % PADDLE_ROOT
+        os.system(
+            "cd %s/build && ctest -N | awk -F ': ' '{print $2}' | sed '/^$/d' | sed '$d' > %s"
+            % (PADDLE_ROOT, all_ut_file))
+        #determine whether filename is in all_ut_case
+        with open(all_ut_file, 'r') as f:
+            (filepath, tempfilename) = os.path.split(filename)
+            for f_file in f:
+                if f_file.strip('\n') == tempfilename.split(".")[0]:
+                    return True
+            else:
+                return False
+
     def get_pr_ut(self):
         """ Get unit tests in pull request. """
         if self.full_case:
@@ -351,18 +366,34 @@ class PRChecker(object):
                     elif 'tests/unittests/xpu' in f_judge or 'tests/unittests/npu' in f_judge or 'op_npu.cc' in f_judge:
                         ut_list.append('xpu_npu_placeholder')
                         onlyCommentsFilesOrXpu.append(f_judge)
-                    elif f_judge.endswith(('.h', '.cu', '.cc', 'py')):
-                        if f_judge.find('test_') != -1 or f_judge.find(
-                                '_test') != -1:
-                            check_added_ut = True
-                        if file_dict[f] not in ['removed']:
+                    elif f_judge.endswith(('.h', '.cu', '.cc', '.py')):
+                        #determine whether the new added file is a member of added_ut
+                        if file_dict[f] in ['added']:
+                            f_judge_in_added_ut = False
+                            with open('{}/added_ut'.format(
+                                    PADDLE_ROOT)) as utfile:
+                                (filepath,
+                                 tempfilename) = os.path.split(f_judge)
+                                for f_file in utfile:
+                                    if f_file.strip('\n') == tempfilename.split(
+                                            ".")[0]:
+                                        f_judge_in_added_ut = True
+                            if f_judge_in_added_ut == True:
+                                print(
+                                    "Adding new unit tests not hit mapFiles: %s"
+                                    % f_judge)
+                            else:
+                                notHitMapFiles.append(f_judge)
+                        elif file_dict[f] in ['removed']:
+                            print("remove file not hit mapFiles: %s" % f_judge)
+                        else:
                             if self.is_only_comment(f):
                                 ut_list.append('comment_placeholder')
                                 onlyCommentsFilesOrXpu.append(f_judge)
+                            if self.file_is_unnit_test(f_judge):
+                                ut_list.append(f_judge.split(".")[0])
                             else:
                                 notHitMapFiles.append(f_judge)
-                        else:
-                            print("remove file not hit mapFiles: %s" % f_judge)
                     else:
                         notHitMapFiles.append(
                             f_judge) if file_dict[f] != 'removed' else print(
@@ -387,10 +418,6 @@ class PRChecker(object):
                     print("filterFiles: %s" % filterFiles)
                 return ''
             else:
-                if check_added_ut:
-                    with open('{}/added_ut'.format(PADDLE_ROOT)) as utfile:
-                        for ut in utfile:
-                            ut_list.append(ut.rstrip('\r\n'))
                 if ut_list:
                     ret = self.__urlretrieve(
                         'https://paddle-docker-tar.bj.bcebos.com/pre_test/prec_delta',