diff --git a/pycasbin/README.md b/pycasbin/README.md
index d9eae1f9..17a4fb8c 100644
--- a/pycasbin/README.md
+++ b/pycasbin/README.md
@@ -82,6 +82,12 @@ def isAuthorized(req):
 
 Rest of the method's name is on par with `casbin-cpp`.
 
+### Benchmark
+
+Pycasbin use `pytest` for benchmark.
+
+Install `pytest` and `pycasbin` in your local machine, then run the benchmark by `python3 -m pytest --benchmark-verbose --benchmark-columns=mean,stddev,iqr,ops,rounds casbin-cpp/pycasbin/benchmarks/benchmark_model.py`.
+
 #### Summary
 
 This sums up the basic usage of `pycasbin` module:
diff --git a/pycasbin/benchmarks/benchmark_model.py b/pycasbin/benchmarks/benchmark_model.py
new file mode 100644
index 00000000..177d9f9f
--- /dev/null
+++ b/pycasbin/benchmarks/benchmark_model.py
@@ -0,0 +1,167 @@
+# Copyright 2021 The casbin Authors. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import os
+import casbin
+
+def raw_enforce(sub, obj, act):
+    policy = [["alice", "data1", "read"], ["bob", "data2", "write"]]
+    for rule in policy:
+        if sub == rule[0] and obj == rule[1] and act == rule[2]:
+            return True
+
+    return False
+
+
+def get_examples(path):
+    examples_path = os.path.split(os.path.realpath(__file__))[0] + "/../../examples/"
+    return os.path.abspath(examples_path + path)
+
+
+def get_enforcer(model=None, adapter=None):
+    return casbin.Enforcer(
+        model,
+        adapter,
+    )
+
+
+def test_benchmark_raw(benchmark):
+    @benchmark
+    def benchmark_raw():
+        raw_enforce("alice", "data1", "read")
+
+
+def test_benchmark_basic_model(benchmark):
+    e = get_enforcer(get_examples("basic_model.conf"), get_examples("basic_policy.csv"))
+
+    @benchmark
+    def benchmark_basic_model():
+        e.enforce("alice", "data1", "read")
+
+
+def test_benchmark_rbac_model(benchmark):
+    e = get_enforcer(get_examples("rbac_model.conf"), get_examples("rbac_policy.csv"))
+
+    @benchmark
+    def benchmark_rbac_model():
+        e.enforce("alice", "data1", "read")
+
+
+def test_benchmark_rbac_model_small(benchmark):
+    e = get_enforcer(get_examples("rbac_model.conf"))
+
+    e.add_policies(
+        {("group" + str(i), "data" + str(int(i / 10)), "read") for i in range(100)}
+    )
+    e.add_grouping_policies(
+        {("user" + str(i), "group" + str(int(i / 10))) for i in range(1000)}
+    )
+
+    @benchmark
+    def benchmark_rbac_model():
+        e.enforce("user501", "data9", "read")
+
+
+def test_benchmark_rbac_model_medium(benchmark):
+    e = get_enforcer(get_examples("rbac_model.conf"))
+
+    e.add_policies(
+        {("group" + str(i), "data" + str(int(i / 10)), "read") for i in range(1000)}
+    )
+    e.add_grouping_policies(
+        {("user" + str(i), "group" + str(int(i / 10))) for i in range(10000)}
+    )
+
+    @benchmark
+    def benchmark_rbac_model():
+        e.enforce("user501", "data9", "read")
+
+
+# TODO: pycasbin cost too much time in large model
+# def test_benchmark_rbac_model_large(benchmark):
+#     e = get_enforcer(get_examples("rbac_model.conf"))
+
+#     e.add_policies(
+#         {("group" + str(i), "data" + str(int(i / 10)), "read") for i in range(10000)}
+#     )
+#     e.add_grouping_policies(
+#         {("user" + str(i), "group" + str(int(i / 10))) for i in range(100000)}
+#     )
+
+#     @benchmark
+#     def benchmark_rbac_model():
+#         e.enforce("user501", "data9", "read")
+
+
+def test_benchmark_rbac_model_with_resource_roles(benchmark):
+    e = get_enforcer(
+        get_examples("rbac_with_resource_roles_model.conf"),
+        get_examples("rbac_with_resource_roles_policy.csv"),
+    )
+
+    @benchmark
+    def benchmark_rbac_model_with_resource_roles():
+        e.enforce("alice", "data1", "read")
+
+
+def test_benchmark_rbac_model_with_domains(benchmark):
+    e = get_enforcer(
+        get_examples("rbac_with_domains_model.conf"),
+        get_examples("rbac_with_domains_policy.csv"),
+    )
+
+    @benchmark
+    def benchmark_rbac_model_with_domains():
+        e.enforce("alice", "domain1", "data1", "read")
+
+
+def test_benchmark_abac_model(benchmark):
+    e = get_enforcer(get_examples("abac_model.conf"))
+    sub = "alice"
+    obj = {"Owner": "alice", "id": "data1"}
+
+    @benchmark
+    def benchmark_abac_model():
+        e.enforce(sub, obj, "read")
+
+
+def test_benchmark_rbac_with_deny(benchmark):
+    e = get_enforcer(
+        get_examples("rbac_with_deny_model.conf"),
+        get_examples("rbac_with_deny_policy.csv"),
+    )
+
+    @benchmark
+    def benchmark_rbac_with_deny():
+        e.enforce("alice", "data1", "read")
+
+
+def test_benchmark_prioriry(benchmark):
+    e = get_enforcer(
+        get_examples("priority_model.conf"), get_examples("priority_policy.csv")
+    )
+
+    @benchmark
+    def benchmark_rbac_with_deny():
+        e.enforce("alice", "data1", "read")
+
+
+def test_benchmark_keymatch(benchmark):
+    e = get_enforcer(
+        get_examples("keymatch_model.conf"), get_examples("keymatch_policy.csv")
+    )
+
+    @benchmark
+    def benchmark_keymatch():
+        e.enforce("alice", "/alice_data/resource1", "GET")
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