diff --git a/httprunner/builtin/comparators.py b/httprunner/builtin/comparators.py
index 586a5965..91520625 100644
--- a/httprunner/builtin/comparators.py
+++ b/httprunner/builtin/comparators.py
@@ -4,8 +4,6 @@ Built-in validate comparators.
 
 import re
 
-from httprunner.compat import basestring, builtin_str, integer_types
-
 
 def equals(check_value, expect_value):
     assert check_value == expect_value
@@ -32,46 +30,46 @@ def not_equals(check_value, expect_value):
 
 
 def string_equals(check_value, expect_value):
-    assert builtin_str(check_value) == builtin_str(expect_value)
+    assert str(check_value) == str(expect_value)
 
 
 def length_equals(check_value, expect_value):
-    assert isinstance(expect_value, integer_types)
+    assert isinstance(expect_value, int)
     expect_len = _cast_to_int(expect_value)
     assert len(check_value) == expect_len
 
 
 def length_greater_than(check_value, expect_value):
-    assert isinstance(expect_value, integer_types)
+    assert isinstance(expect_value, int)
     expect_len = _cast_to_int(expect_value)
     assert len(check_value) > expect_len
 
 
 def length_greater_than_or_equals(check_value, expect_value):
-    assert isinstance(expect_value, integer_types)
+    assert isinstance(expect_value, int)
     expect_len = _cast_to_int(expect_value)
     assert len(check_value) >= expect_len
 
 
 def length_less_than(check_value, expect_value):
-    assert isinstance(expect_value, integer_types)
+    assert isinstance(expect_value, int)
     expect_len = _cast_to_int(expect_value)
     assert len(check_value) < expect_len
 
 
 def length_less_than_or_equals(check_value, expect_value):
-    assert isinstance(expect_value, integer_types)
+    assert isinstance(expect_value, int)
     expect_len = _cast_to_int(expect_value)
     assert len(check_value) <= expect_len
 
 
 def contains(check_value, expect_value):
-    assert isinstance(check_value, (list, tuple, dict, basestring))
+    assert isinstance(check_value, (list, tuple, dict, str, bytes))
     assert expect_value in check_value
 
 
 def contained_by(check_value, expect_value):
-    assert isinstance(expect_value, (list, tuple, dict, basestring))
+    assert isinstance(expect_value, (list, tuple, dict, str, bytes))
     assert check_value in expect_value
 
 
@@ -79,7 +77,7 @@ def type_match(check_value, expect_value):
     def get_type(name):
         if isinstance(name, type):
             return name
-        elif isinstance(name, basestring):
+        elif isinstance(name, str, bytes):
             try:
                 return __builtins__[name]
             except KeyError:
@@ -91,21 +89,21 @@ def type_match(check_value, expect_value):
 
 
 def regex_match(check_value, expect_value):
-    assert isinstance(expect_value, basestring)
-    assert isinstance(check_value, basestring)
+    assert isinstance(expect_value, str)
+    assert isinstance(check_value, str)
     assert re.match(expect_value, check_value)
 
 
 def startswith(check_value, expect_value):
-    assert builtin_str(check_value).startswith(builtin_str(expect_value))
+    assert str(check_value).startswith(str(expect_value))
 
 
 def endswith(check_value, expect_value):
-    assert builtin_str(check_value).endswith(builtin_str(expect_value))
+    assert str(check_value).endswith(str(expect_value))
 
 
 def _cast_to_int(expect_value):
     try:
         return int(expect_value)
     except Exception:
-        raise AssertionError("%r can't cast to int" % str(expect_value))
\ No newline at end of file
+        raise AssertionError("%r can't cast to int" % str(expect_value))
diff --git a/httprunner/builtin/functions.py b/httprunner/builtin/functions.py
index d5b31c7a..abb0b81d 100644
--- a/httprunner/builtin/functions.py
+++ b/httprunner/builtin/functions.py
@@ -7,7 +7,6 @@ import random
 import string
 import time
 
-from httprunner.compat import builtin_str, integer_types
 from httprunner.exceptions import ParamsError
 
 
@@ -21,8 +20,8 @@ def gen_random_string(str_len):
 def get_timestamp(str_len=13):
     """ get timestamp string, length can only between 0 and 16
     """
-    if isinstance(str_len, integer_types) and 0 < str_len < 17:
-        return builtin_str(time.time()).replace(".", "")[:str_len]
+    if isinstance(str_len, int) and 0 < str_len < 17:
+        return str(time.time()).replace(".", "")[:str_len]
 
     raise ParamsError("timestamp length can only between 0 and 16.")
 
diff --git a/httprunner/compat.py b/httprunner/compat.py
deleted file mode 100644
index aa2a16ec..00000000
--- a/httprunner/compat.py
+++ /dev/null
@@ -1,61 +0,0 @@
-# encoding: utf-8
-
-"""
-httprunner.compat
-~~~~~~~~~~~~~~~~~
-
-This module handles import compatibility issues between Python 2 and
-Python 3.
-"""
-
-try:
-    import simplejson as json
-except ImportError:
-    import json
-
-import sys
-
-# -------
-# Pythons
-# -------
-
-# Syntax sugar.
-_ver = sys.version_info
-
-#: Python 2.x?
-is_py2 = (_ver[0] == 2)
-
-#: Python 3.x?
-is_py3 = (_ver[0] == 3)
-
-
-# ---------
-# Specifics
-# ---------
-
-try:
-    JSONDecodeError = json.JSONDecodeError
-except AttributeError:
-    JSONDecodeError = ValueError
-
-if is_py2:
-    builtin_str = str
-    bytes = str
-    str = unicode
-    basestring = basestring
-    numeric_types = (int, long, float)
-    integer_types = (int, long)
-
-    FileNotFoundError = IOError
-    import StringIO as io
-
-elif is_py3:
-    builtin_str = str
-    str = str
-    bytes = bytes
-    basestring = (str, bytes)
-    numeric_types = (int, float)
-    integer_types = (int,)
-
-    FileNotFoundError = FileNotFoundError
-    import io as io
diff --git a/httprunner/exceptions.py b/httprunner/exceptions.py
index 17bd8ee1..77d1be52 100644
--- a/httprunner/exceptions.py
+++ b/httprunner/exceptions.py
@@ -1,7 +1,3 @@
-# encoding: utf-8
-
-from httprunner.compat import JSONDecodeError, FileNotFoundError
-
 """ failure type exceptions
     these exceptions will mark test as failure
 """
diff --git a/httprunner/parser.py b/httprunner/parser.py
index 75bdef9c..b61e6adc 100644
--- a/httprunner/parser.py
+++ b/httprunner/parser.py
@@ -9,7 +9,6 @@ import re
 from loguru import logger
 
 from httprunner import exceptions, utils, loader
-from httprunner.compat import basestring, numeric_types, str
 
 # use $$ to escape $ notation
 dolloar_regex_compile = re.compile(r"\$\$")
@@ -46,7 +45,7 @@ def parse_string_value(str_value):
 def is_var_or_func_exist(content):
     """ check if variable or function exist
     """
-    if not isinstance(content, basestring):
+    if not isinstance(content, str):
         return False
 
     try:
@@ -735,7 +734,7 @@ def prepare_lazy_data(content, functions_mapping=None, check_variables_set=None,
 
     """
     # TODO: refactor type check
-    if content is None or isinstance(content, (numeric_types, bool, type)):
+    if content is None or isinstance(content, (int, float, bool, type)):
         return content
 
     elif isinstance(content, (list, set, tuple)):
@@ -768,7 +767,7 @@ def prepare_lazy_data(content, functions_mapping=None, check_variables_set=None,
 
         return parsed_content
 
-    elif isinstance(content, basestring):
+    elif isinstance(content, str):
         # content is in string format here
         if not is_var_or_func_exist(content):
             # content is neither variable nor function
@@ -788,7 +787,7 @@ def parse_lazy_data(content, variables_mapping=None):
         Notice: variables_mapping should not contain any variable or function.
     """
     # TODO: refactor type check
-    if content is None or isinstance(content, (numeric_types, bool, type)):
+    if content is None or isinstance(content, (int, float, bool, type)):
         return content
 
     elif isinstance(content, LazyString):
@@ -1057,7 +1056,7 @@ def __prepare_config(config, project_mapping, session_variables_set=None):
     override_variables = utils.deepcopy_dict(project_mapping.get("variables", {}))
     functions = project_mapping.get("functions", {})
 
-    if isinstance(raw_config_variables, basestring) and function_regex_compile.match(
+    if isinstance(raw_config_variables, str) and function_regex_compile.match(
             raw_config_variables):
         # config variables are generated by calling function
         # e.g.
diff --git a/httprunner/report/stringify.py b/httprunner/report/stringify.py
index 4797ce8d..c6b9cf11 100644
--- a/httprunner/report/stringify.py
+++ b/httprunner/report/stringify.py
@@ -1,11 +1,10 @@
+import json
 from base64 import b64encode
 from collections import Iterable
 
 from jinja2 import escape
 from requests.cookies import RequestsCookieJar
 
-from httprunner.compat import basestring, bytes, json, numeric_types, JSONDecodeError
-
 
 def dumps_json(value):
     """ dumps json value to indented string
@@ -67,13 +66,13 @@ def __stringify_request(request_data):
                         # request body is in json format
                         value = json.loads(value)
                         value = dumps_json(value)
-                    except JSONDecodeError:
+                    except json.JSONDecodeError:
                         pass
                 value = escape(value)
             except UnicodeDecodeError:
                 pass
 
-        elif not isinstance(value, (basestring, numeric_types, Iterable)):
+        elif not isinstance(value, (str, bytes, int, float, Iterable)):
             # class instance, e.g. MultipartEncoder()
             value = repr(value)
 
@@ -132,7 +131,7 @@ def __stringify_response(response_data):
             except UnicodeDecodeError:
                 pass
 
-        elif not isinstance(value, (basestring, numeric_types, Iterable)):
+        elif not isinstance(value, (str, bytes, int, float, Iterable)):
             # class instance, e.g. MultipartEncoder()
             value = repr(value)
 
diff --git a/httprunner/response.py b/httprunner/response.py
index d13f4852..d3fa78c6 100644
--- a/httprunner/response.py
+++ b/httprunner/response.py
@@ -5,7 +5,6 @@ import jsonpath
 from loguru import logger
 
 from httprunner import exceptions, utils
-from httprunner.compat import basestring, is_py2
 
 text_extractor_regexp_compile = re.compile(r".*\(.*\).*")
 
@@ -254,7 +253,7 @@ class ResponseObject(object):
     def extract_field(self, field):
         """ extract value from requests.Response.
         """
-        if not isinstance(field, basestring):
+        if not isinstance(field, str):
             err_msg = f"Invalid extractor! => {field}\n"
             logger.error(err_msg)
             raise exceptions.ParamsError(err_msg)
@@ -268,9 +267,6 @@ class ResponseObject(object):
         else:
             value = self._extract_field_with_delimiter(field)
 
-        if is_py2 and isinstance(value, unicode):
-            value = value.encode("utf-8")
-
         msg += f"\t=> {value}"
         logger.debug(msg)
 
diff --git a/httprunner/utils.py b/httprunner/utils.py
index b9322ee3..aa243af9 100644
--- a/httprunner/utils.py
+++ b/httprunner/utils.py
@@ -13,7 +13,6 @@ import sentry_sdk
 from loguru import logger
 
 from httprunner import exceptions, __version__
-from httprunner.compat import basestring, bytes, is_py2
 from httprunner.exceptions import ParamsError
 
 absolute_http_url_regexp = re.compile(r"^https?://", re.I)
@@ -112,7 +111,7 @@ def query_json(json_content, query, delimiter='.'):
     response_body = f"response body: {json_content}\n"
     try:
         for key in query.split(delimiter):
-            if isinstance(json_content, (list, basestring)):
+            if isinstance(json_content, (list, str, bytes)):
                 json_content = json_content[int(key)]
             elif isinstance(json_content, dict):
                 json_content = json_content[key]
@@ -355,12 +354,6 @@ def print_info(info_mapping):
         elif value is None:
             value = "None"
 
-        if is_py2:
-            if isinstance(key, unicode):
-                key = key.encode("utf-8")
-            if isinstance(value, unicode):
-                value = value.encode("utf-8")
-
         content += content_format.format(key, value)
 
     content += "-" * 48 + "\n"
@@ -551,7 +544,7 @@ def prettify_json_file(file_list):
 def omit_long_data(body, omit_len=512):
     """ omit too long str/bytes
     """
-    if not isinstance(body, basestring):
+    if not isinstance(body, (str, bytes)):
         return body
 
     body_len = len(body)
@@ -583,26 +576,14 @@ def dump_json_file(json_data, json_file_abs_path):
 
     try:
         with io.open(json_file_abs_path, 'w', encoding='utf-8') as outfile:
-            if is_py2:
-                outfile.write(
-                    unicode(json.dumps(
-                        json_data,
-                        indent=4,
-                        separators=(',', ':'),
-                        encoding="utf8",
-                        ensure_ascii=False,
-                        cls=PythonObjectEncoder
-                    ))
-                )
-            else:
-                json.dump(
-                    json_data,
-                    outfile,
-                    indent=4,
-                    separators=(',', ':'),
-                    ensure_ascii=False,
-                    cls=PythonObjectEncoder
-                )
+            json.dump(
+                json_data,
+                outfile,
+                indent=4,
+                separators=(',', ':'),
+                ensure_ascii=False,
+                cls=PythonObjectEncoder
+            )
 
         msg = f"dump file: {json_file_abs_path}"
         logger.info(msg)
diff --git a/tests/test_cli.py b/tests/test_cli.py
index abf2a714..33914844 100644
--- a/tests/test_cli.py
+++ b/tests/test_cli.py
@@ -1,8 +1,8 @@
+import io
 import sys
 import unittest
 
 from httprunner.cli import main
-from httprunner.compat import io
 
 
 class TestCli(unittest.TestCase):
diff --git a/tests/test_response.py b/tests/test_response.py
index ddd90d54..a11cd204 100644
--- a/tests/test_response.py
+++ b/tests/test_response.py
@@ -1,7 +1,6 @@
 import requests
 
 from httprunner import exceptions, response
-from httprunner.compat import basestring, bytes
 from tests.api_server import HTTPBIN_SERVER
 from tests.base import ApiServerUnittest
 
@@ -257,7 +256,7 @@ class TestResponse(ApiServerUnittest):
         ]
         extract_binds_dict = resp_obj.extract_response(extract_binds_list)
 
-        self.assertIsInstance(extract_binds_dict["resp_content"], basestring)
+        self.assertIsInstance(extract_binds_dict["resp_content"], str)
         self.assertIn("httpbin.org", extract_binds_dict["resp_content"])
 
         extract_binds_list = [