diff --git a/.github/workflows/integration_test.yml b/.github/workflows/integration_test.yml
index da6cc0be..6064459e 100644
--- a/.github/workflows/integration_test.yml
+++ b/.github/workflows/integration_test.yml
@@ -30,14 +30,13 @@ jobs:
         poetry build
         ls dist/*.whl | xargs pip install # test installation
         hrun -V
-        hrun run -h
-        hrun startproject -h
-        hrun har2case -h
-        pip install locustio
-        hrun locusts -h
+        har2case -h
+        httprunner run -h
+        httprunner startproject -h
+        httprunner har2case -h
     - name: Run smoketest - postman echo
       run: |
-        hrun examples/postman_echo/request_methods
+        hrun -s examples/postman_echo/request_methods
     - name: Run smoketest - httpbin
       run: |
-        hrun examples/httpbin/
+        hrun -s examples/httpbin/
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 2e794dd4..90a7953b 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Release History
 
+## 3.0.5 (2020-05-22)
+
+**Added**
+
+- feat: each testcase has an unique id in uuid4 format
+- feat: add default header `HRUN-Request-ID` for each testcase #721
+- feat: builtin allure report
+- feat: dump log for each testcase
+
+**Fixed**
+
+- fix: ensure referenced testcase share the same session
+
+**Changed**
+
+- change: remove default added `-s` option for hrun
+
 ## 3.0.4 (2020-05-19)
 
 **Added**
diff --git a/examples/postman_echo/conftest.py b/examples/postman_echo/conftest.py
new file mode 100644
index 00000000..139597f9
--- /dev/null
+++ b/examples/postman_echo/conftest.py
@@ -0,0 +1,2 @@
+
+
diff --git a/examples/postman_echo/request_methods/conf.py b/examples/postman_echo/request_methods/conf.py
deleted file mode 100644
index e69de29b..00000000
diff --git a/httprunner/__init__.py b/httprunner/__init__.py
index 1c9ba758..36b1d4d9 100644
--- a/httprunner/__init__.py
+++ b/httprunner/__init__.py
@@ -1,4 +1,4 @@
-__version__ = "3.0.4"
+__version__ = "3.0.5"
 __description__ = "One-stop solution for HTTP(S) testing."
 
 from httprunner.runner import HttpRunner
diff --git a/httprunner/cli.py b/httprunner/cli.py
index f5f5655f..a8140484 100644
--- a/httprunner/cli.py
+++ b/httprunner/cli.py
@@ -5,9 +5,9 @@ import sys
 import pytest
 from loguru import logger
 
-from httprunner import __description__, __version__, exceptions
+from httprunner import __description__, __version__
 from httprunner.ext.har2case import init_har2case_parser, main_har2case
-from httprunner.ext.make import init_make_parser, main_make, convert_testcase_path
+from httprunner.ext.make import init_make_parser, main_make
 from httprunner.ext.scaffold import init_parser_scaffold, main_scaffold
 
 
@@ -40,9 +40,6 @@ def main_run(extra_args):
         sys.exit(1)
 
     extra_args_new.extend(testcase_path_list)
-    if "-s" not in extra_args_new:
-        extra_args_new.insert(0, "-s")
-
     pytest.main(extra_args_new)
 
 
diff --git a/httprunner/cli_test.py b/httprunner/cli_test.py
index db7f9651..a344866c 100644
--- a/httprunner/cli_test.py
+++ b/httprunner/cli_test.py
@@ -2,6 +2,8 @@ import io
 import sys
 import unittest
 
+import pytest
+
 from httprunner.cli import main
 
 
@@ -36,3 +38,11 @@ class TestCli(unittest.TestCase):
         from httprunner import __description__
 
         self.assertIn(__description__, self.captured_output.getvalue().strip())
+
+    def test_debug_pytest(self):
+        pytest.main(
+            [
+                "-s",
+                "examples/postman_echo/request_methods/request_with_variables_test.py",
+            ]
+        )
diff --git a/httprunner/client.py b/httprunner/client.py
index b7e645a7..f5474ce3 100644
--- a/httprunner/client.py
+++ b/httprunner/client.py
@@ -41,6 +41,7 @@ def get_req_resp_record(resp_obj: Response) -> ReqRespData:
 
     # record actual request info
     request_headers = dict(resp_obj.request.headers)
+    request_cookies = dict(resp_obj.request._cookies)
     request_body = resp_obj.request.body
     try:
         request_body = json.loads(request_body)
@@ -57,6 +58,7 @@ def get_req_resp_record(resp_obj: Response) -> ReqRespData:
         method=resp_obj.request.method,
         url=resp_obj.request.url,
         headers=request_headers,
+        cookies=request_cookies,
         body=request_body,
     )
 
@@ -192,7 +194,7 @@ class HttpSession(requests.Session):
             logger.info(
                 f"status_code: {response.status_code}, "
                 f"response_time(ms): {response_time_ms} ms, "
-                f"response_length: {content_size} bytes\n"
+                f"response_length: {content_size} bytes"
             )
 
         return response
diff --git a/httprunner/loader.py b/httprunner/loader.py
index 937fabb0..5e6234ed 100644
--- a/httprunner/loader.py
+++ b/httprunner/loader.py
@@ -410,6 +410,11 @@ def load_project_meta(test_path: Text) -> ProjectMeta:
             environments and debugtalk.py functions.
 
     """
+    project_meta = ProjectMeta()
+
+    if not test_path:
+        return project_meta
+
     if test_path in project_meta_cached_mapping:
         return project_meta_cached_mapping[test_path]
 
@@ -417,8 +422,6 @@ def load_project_meta(test_path: Text) -> ProjectMeta:
         test_path
     )
 
-    project_meta = ProjectMeta()
-
     # load .env file
     # NOTICE:
     # environment variable maybe loaded in debugtalk.py
diff --git a/httprunner/runner.py b/httprunner/runner.py
index df2824f5..f3f2fb3c 100644
--- a/httprunner/runner.py
+++ b/httprunner/runner.py
@@ -1,5 +1,7 @@
 import os
 import time
+import uuid
+import allure
 from datetime import datetime
 from typing import List, Dict, Text
 
@@ -31,11 +33,15 @@ class HttpRunner(object):
 
     success: bool = True  # indicate testcase execution result
     __project_meta: ProjectMeta = None
+    __case_id: Text = ""
     __step_datas: List[StepData] = None
     __session: HttpSession = None
     __session_variables: VariablesMapping = {}
-    __start_at = 0
-    __duration = 0
+    # time
+    __start_at: float = 0
+    __duration: float = 0
+    # log
+    __log_path: Text = ""
 
     def with_project_meta(self, project_meta: ProjectMeta) -> "HttpRunner":
         self.__project_meta = project_meta
@@ -45,6 +51,10 @@ class HttpRunner(object):
         self.__session = session
         return self
 
+    def with_case_id(self, case_id: Text) -> "HttpRunner":
+        self.__case_id = case_id
+        return self
+
     def with_variables(self, variables: VariablesMapping) -> "HttpRunner":
         self.__session_variables = variables
         return self
@@ -60,6 +70,10 @@ class HttpRunner(object):
         parsed_request_dict = parse_data(
             request_dict, step.variables, self.__project_meta.functions
         )
+        parsed_request_dict["headers"].setdefault(
+            "HRUN-Request-ID",
+            f"HRUN-{self.__case_id}-{str(int(time.time() * 1000))[-6:]}",
+        )
 
         # prepare arguments
         method = parsed_request_dict.pop("method")
@@ -68,7 +82,6 @@ class HttpRunner(object):
         parsed_request_dict["json"] = parsed_request_dict.pop("req_json", {})
 
         # request
-        self.__session = self.__session or HttpSession()
         resp = self.__session.request(method, url, **parsed_request_dict)
         resp_obj = ResponseObject(resp)
 
@@ -132,6 +145,7 @@ class HttpRunner(object):
         case_result = (
             HttpRunner()
             .with_session(self.__session)
+            .with_case_id(self.__case_id)
             .with_variables(step_variables)
             .run_path(ref_testcase_path)
         )
@@ -159,32 +173,32 @@ class HttpRunner(object):
         logger.info(f"run step end: {step.name} <<<<<<\n")
         return step_data.export
 
+    def __parse_config(self, config: TConfig):
+        config.variables.update(self.__session_variables)
+        config.variables = parse_variables_mapping(
+            config.variables, self.__project_meta.functions
+        )
+        config.name = parse_data(
+            config.name, config.variables, self.__project_meta.functions
+        )
+        config.base_url = parse_data(
+            config.base_url, config.variables, self.__project_meta.functions
+        )
+
     def run(self, testcase: TestCase):
-        """main entrance"""
+        """run testcase"""
         self.config = testcase.config
         self.teststeps = testcase.teststeps
-        self.config.variables.update(self.__session_variables)
 
-        if self.config.path:
-            self.__project_meta = load_project_meta(self.config.path)
-        elif not self.__project_meta:
-            self.__project_meta = ProjectMeta()
-
-        def parse_config(config: TConfig):
-            config.variables = parse_variables_mapping(
-                config.variables, self.__project_meta.functions
-            )
-            config.name = parse_data(
-                config.name, config.variables, self.__project_meta.functions
-            )
-            config.base_url = parse_data(
-                config.base_url, config.variables, self.__project_meta.functions
-            )
-
-        parse_config(self.config)
+        # prepare
+        self.__project_meta = self.__project_meta or load_project_meta(self.config.path)
+        self.__parse_config(self.config)
         self.__start_at = time.time()
         self.__step_datas: List[StepData] = []
+        self.__session = self.__session or HttpSession()
         self.__session_variables = {}
+
+        # run teststeps
         for step in self.teststeps:
             # update with config variables
             step.variables.update(self.config.variables)
@@ -195,7 +209,8 @@ class HttpRunner(object):
                 step.variables, self.__project_meta.functions
             )
             # run step
-            extract_mapping = self.__run_step(step)
+            with allure.step(f"step: {step.name}"):
+                extract_mapping = self.__run_step(step)
             # save extracted variables to session variables
             self.__session_variables.update(extract_mapping)
 
@@ -231,6 +246,7 @@ class HttpRunner(object):
         return TestCaseSummary(
             name=self.config.name,
             success=self.success,
+            case_id=self.__case_id,
             time=TestCaseTime(
                 start_at=self.__start_at,
                 start_at_iso_format=start_at_iso_format,
@@ -239,9 +255,36 @@ class HttpRunner(object):
             in_out=TestCaseInOut(
                 vars=self.config.variables, export=self.get_export_variables()
             ),
+            log=self.__log_path,
             step_datas=self.__step_datas,
         )
 
     def test_start(self):
-        """discovered by pytest"""
-        return self.run(TestCase(config=self.config, teststeps=self.teststeps))
+        """main entrance, discovered by pytest"""
+        self.__case_id = self.__case_id or str(uuid.uuid4())
+        self.__log_path = self.__log_path or os.path.join(
+            "logs", f"{self.__case_id}.run.log"
+        )
+        log_handler = logger.add(self.__log_path, level="DEBUG")
+
+        # parse config name
+        self.__project_meta = self.__project_meta or load_project_meta(self.config.path)
+        variables = self.config.variables
+        variables.update(self.__session_variables)
+        self.config.name = parse_data(
+            self.config.name, variables, self.__project_meta.functions
+        )
+
+        # update allure report meta
+        allure.dynamic.title(self.config.name)
+        allure.dynamic.description(f"TestCase ID: {self.__case_id}")
+
+        logger.info(
+            f"Start to run testcase: {self.config.name}, TestCase ID: {self.__case_id}"
+        )
+
+        try:
+            return self.run(TestCase(config=self.config, teststeps=self.teststeps))
+        finally:
+            logger.remove(log_handler)
+            logger.info(f"generate testcase log: {self.__log_path}")
diff --git a/httprunner/schema.py b/httprunner/schema.py
index feae1fb5..c6c0fe97 100644
--- a/httprunner/schema.py
+++ b/httprunner/schema.py
@@ -13,6 +13,7 @@ BaseUrl = Union[HttpUrl, Text]
 VariablesMapping = Dict[Text, Any]
 FunctionsMapping = Dict[Text, Callable]
 Headers = Dict[Text, Text]
+Cookies = Dict[Text, Text]
 Verify = bool
 Hook = List[Text]
 Export = List[Text]
@@ -53,7 +54,7 @@ class Request(BaseModel):
     headers: Headers = {}
     req_json: Dict = Field({}, alias="json")
     data: Union[Text, Dict[Text, Any]] = ""
-    cookies: Dict[Text, Text] = {}
+    cookies: Cookies = {}
     timeout: int = 120
     allow_redirects: bool = True
     verify: Verify = False
@@ -108,15 +109,15 @@ class RequestData(BaseModel):
     method: MethodEnum = MethodEnum.GET
     url: Url
     headers: Headers = {}
-    # TODO: add cookies
+    cookies: Cookies = {}
     body: Union[Text, bytes, Dict, None] = {}
 
 
 class ResponseData(BaseModel):
     status_code: int
-    cookies: Dict
-    encoding: Union[Text, None] = None
     headers: Dict
+    cookies: Cookies
+    encoding: Union[Text, None] = None
     content_type: Text
     body: Union[Text, bytes, Dict]
 
@@ -147,8 +148,9 @@ class StepData(BaseModel):
 
 
 class TestCaseSummary(BaseModel):
-    name: Text = ""
-    success: bool = False
+    name: Text
+    success: bool
+    case_id: Text
     time: TestCaseTime
     in_out: TestCaseInOut = {}
     log: Text = ""
diff --git a/poetry.lock b/poetry.lock
index 8cc0bcd1..e373caa9 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -12,6 +12,32 @@ version = "0.2.2"
 python = "<3.7"
 version = "2.4"
 
+[[package]]
+category = "main"
+description = "Allure pytest integration"
+name = "allure-pytest"
+optional = false
+python-versions = "*"
+version = "2.8.15"
+
+[package.dependencies]
+allure-python-commons = "2.8.15"
+pytest = ">=4.5.0"
+six = ">=1.9.0"
+
+[[package]]
+category = "main"
+description = "Common module for integrate allure with python-based frameworks"
+name = "allure-python-commons"
+optional = false
+python-versions = "*"
+version = "2.8.15"
+
+[package.dependencies]
+attrs = ">=16.0.0"
+pluggy = ">=0.4.0"
+six = ">=1.9.0"
+
 [[package]]
 category = "main"
 description = "A small Python module for determining appropriate platform-specific dirs, e.g. a \"user data dir\"."
@@ -516,7 +542,7 @@ docs = ["sphinx", "jaraco.packaging (>=3.2)", "rst.linker (>=1.9)"]
 testing = ["jaraco.itertools", "func-timeout"]
 
 [metadata]
-content-hash = "be53fb0cd423bac9dda129a958a58026009a99a455081333d7af51c22a4df8cf"
+content-hash = "67027f8f78c61b981f3c01613ded1da2a0256a28fb92f95dd2d642b3fd1b43a5"
 python-versions = "^3.6"
 
 [metadata.files]
@@ -524,6 +550,14 @@ aiocontextvars = [
     {file = "aiocontextvars-0.2.2-py2.py3-none-any.whl", hash = "sha256:885daf8261818767d8f7cbd79f9d4482d118f024b6586ef6e67980236a27bfa3"},
     {file = "aiocontextvars-0.2.2.tar.gz", hash = "sha256:f027372dc48641f683c559f247bd84962becaacdc9ba711d583c3871fb5652aa"},
 ]
+allure-pytest = [
+    {file = "allure-pytest-2.8.15.tar.gz", hash = "sha256:27f9c75194e95ba069ee2d6d2a2615ed6c7e96617ff9a492ab3a74f3f4e64be2"},
+    {file = "allure_pytest-2.8.15-py3-none-any.whl", hash = "sha256:62512bbce3d39b27a8e7ffbfb24e08e99c43df29b4f345168dfc9692bfddef71"},
+]
+allure-python-commons = [
+    {file = "allure-python-commons-2.8.15.tar.gz", hash = "sha256:c4768e5e1350fe2eb6e1c9dac6158dcb82e23de80c83c4fc6d71765c207c1408"},
+    {file = "allure_python_commons-2.8.15-py3-none-any.whl", hash = "sha256:88ad53109b6fa57e6b721f4eab59116db6037e219bf54e1f196a222ba5e2dcfe"},
+]
 appdirs = [
     {file = "appdirs-1.4.4-py2.py3-none-any.whl", hash = "sha256:a841dacd6b99318a741b166adb07e19ee71a274450e68237b4650ca1055ab128"},
     {file = "appdirs-1.4.4.tar.gz", hash = "sha256:7d5d0167b2b1ba821647616af46a749d1c653740dd0d2415100fe26e27afdf41"},
diff --git a/pyproject.toml b/pyproject.toml
index 6614464f..9a499654 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "httprunner"
-version = "3.0.4"
+version = "3.0.5"
 description = "One-stop solution for HTTP(S) testing."
 license = "Apache-2.0"
 readme = "README.md"
@@ -39,6 +39,7 @@ loguru = "^0.4.1"
 jmespath = "^0.9.5"
 black = "^19.10b0"
 pytest = "^5.4.2"
+allure-pytest = "^2.8.15"
 
 [tool.poetry.dev-dependencies]
 coverage = "^4.5.4"