diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index cabaac4b..1a104309 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Release History
 
+## 3.1.1 (2020-06-21)
+
+**Fixed**
+
+- fix #942: type_match None
+
 ## 3.1.0 (2020-06-21)
 
 **Added**
diff --git a/examples/postman_echo/request_methods/request_with_functions.yml b/examples/postman_echo/request_methods/request_with_functions.yml
index b99bdbc3..634875d8 100644
--- a/examples/postman_echo/request_methods/request_with_functions.yml
+++ b/examples/postman_echo/request_methods/request_with_functions.yml
@@ -48,6 +48,9 @@ teststeps:
     validate:
         - eq: ["status_code", 200]
         - eq: ["body.data", "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar21."]
+        - type_match: ["body.json", None]
+        - type_match: ["body.json", NoneType]
+        - type_match: ["body.json", null]
 -
     name: post form data
     variables:
diff --git a/examples/postman_echo/request_methods/request_with_functions_test.py b/examples/postman_echo/request_methods/request_with_functions_test.py
index 68add82e..4ed62183 100644
--- a/examples/postman_echo/request_methods/request_with_functions_test.py
+++ b/examples/postman_echo/request_methods/request_with_functions_test.py
@@ -57,6 +57,9 @@ class TestCaseRequestWithFunctions(HttpRunner):
                 "body.data",
                 "This is expected to be sent back as part of response body: bar12-$expect_foo2-bar21.",
             )
+            .assert_type_match("body.json", "None")
+            .assert_type_match("body.json", "NoneType")
+            .assert_type_match("body.json", None)
         ),
         Step(
             RunRequest("post form data")
diff --git a/httprunner/builtin/comparators.py b/httprunner/builtin/comparators.py
index 2a8ab78c..b81919b3 100644
--- a/httprunner/builtin/comparators.py
+++ b/httprunner/builtin/comparators.py
@@ -80,7 +80,10 @@ def type_match(check_value, expect_value):
         else:
             raise ValueError(name)
 
-    assert isinstance(check_value, get_type(expect_value))
+    if expect_value in ["None", "NoneType", None]:
+        assert check_value is None
+    else:
+        assert type(check_value) == get_type(expect_value)
 
 
 def regex_match(check_value, expect_value):
diff --git a/tests/utils_test.py b/tests/utils_test.py
index 159ea4e1..99771c25 100644
--- a/tests/utils_test.py
+++ b/tests/utils_test.py
@@ -69,6 +69,9 @@ class TestUtils(unittest.TestCase):
         functions_mapping["type_match"]([1], "list")
         functions_mapping["type_match"]({}, "dict")
         functions_mapping["type_match"]({"a": 1}, "dict")
+        functions_mapping["type_match"](None, "None")
+        functions_mapping["type_match"](None, "NoneType")
+        functions_mapping["type_match"](None, None)
 
     def test_lower_dict_keys(self):
         request_dict = {