diff --git a/httprunner/compat.py b/httprunner/compat.py
index d69a15cf..91308ec2 100644
--- a/httprunner/compat.py
+++ b/httprunner/compat.py
@@ -2,7 +2,7 @@
 This module handles compatibility issues between testcase format v2 and v3.
 """
 
-from typing import List, Dict, Text
+from typing import List, Dict, Text, Union
 
 from httprunner import exceptions
 
@@ -29,7 +29,7 @@ def convert_jmespath(raw: Text) -> Text:
     return ".".join(raw_list).replace(".[", "[")
 
 
-def convert_extractors(extractors: List) -> Dict:
+def convert_extractors(extractors: Union[List, Dict]) -> Dict:
     """ convert extract list(v2) to dict(v3)
 
     Args:
@@ -71,19 +71,34 @@ def convert_validators(validators: List) -> List:
     return validators
 
 
+def ensure_step_attachment(step: Dict) -> Dict:
+
+    test_dict = {
+        "name": step["name"],
+    }
+
+    if "variables" in step:
+        test_dict["variables"] = step["variables"]
+
+    if "extract" in step:
+        test_dict["extract"] = convert_extractors(step["extract"])
+
+    if "validate" in step:
+        test_dict["validate"] = convert_validators(step["validate"])
+
+    return test_dict
+
+
 def ensure_testcase_v3_api(api_content: Dict) -> Dict:
 
+    teststep = {
+        "request": api_content["request"],
+    }
+    teststep.update(ensure_step_attachment(api_content))
+
     return {
         "config": {"name": api_content["name"]},
-        "teststeps": [
-            {
-                "name": api_content["name"],
-                "variables": api_content.get("variables", {}),
-                "request": api_content["request"],
-                "validate": convert_validators(api_content.get("validate", [])),
-                "extract": convert_extractors(api_content.get("extract", {})),
-            }
-        ],
+        "teststeps": [teststep],
     }
 
 
@@ -92,9 +107,7 @@ def ensure_testcase_v3(test_content: Dict) -> Dict:
     v3_content = {"config": test_content["config"], "teststeps": []}
 
     for step in test_content["teststeps"]:
-        teststep = {"name": step.pop("name", "")}
-        if "variables" in step:
-            teststep["variables"] = step.pop("variables")
+        teststep = {}
 
         if "request" in step:
             teststep["request"] = step.pop("request")
@@ -103,13 +116,7 @@ def ensure_testcase_v3(test_content: Dict) -> Dict:
         elif "testcase" in step:
             teststep["testcase"] = step.pop("testcase")
 
-        if "extract" in step:
-            teststep["extract"] = convert_extractors(step.pop("extract"))
-
-        if "validate" in step:
-            teststep["validate"] = convert_validators(step.pop("validate"))
-
-        teststep.update(step)
+        teststep.update(ensure_step_attachment(step))
         v3_content["teststeps"].append(teststep)
 
     return v3_content
diff --git a/httprunner/compat_test.py b/httprunner/compat_test.py
index b7bd9d5f..d4979fb6 100644
--- a/httprunner/compat_test.py
+++ b/httprunner/compat_test.py
@@ -1,4 +1,3 @@
-import os
 import unittest
 
 from httprunner import compat
@@ -48,3 +47,90 @@ class TestCompat(unittest.TestCase):
             compat.convert_validators([{"eq": ["content.0.name", 201]}]),
             [{"eq": ["body[0].name", 201]}],
         )
+
+    def test_ensure_testcase_v3_api(self):
+        api_content = {
+            "name": "get with params",
+            "request": {
+                "method": "GET",
+                "url": "/get",
+                "params": {"foo1": "bar1", "foo2": "bar2"},
+                "headers": {"User-Agent": "HttpRunner/3.0"},
+            },
+            "extract": [{"varA": "content.varA"}, {"user_agent": "headers.User-Agent"}],
+            "validate": [{"eq": ["content.varB", 200]}, {"lt": ["json.0.varC", 0]}],
+        }
+        self.assertEqual(
+            compat.ensure_testcase_v3_api(api_content),
+            {
+                "config": {"name": "get with params"},
+                "teststeps": [
+                    {
+                        "name": "get with params",
+                        "request": {
+                            "method": "GET",
+                            "url": "/get",
+                            "params": {"foo1": "bar1", "foo2": "bar2"},
+                            "headers": {"User-Agent": "HttpRunner/3.0"},
+                        },
+                        "extract": {
+                            "varA": "body.varA",
+                            "user_agent": 'headers."User-Agent"',
+                        },
+                        "validate": [
+                            {"eq": ["body.varB", 200]},
+                            {"lt": ["body[0].varC", 0]},
+                        ],
+                    }
+                ],
+            },
+        )
+
+    def test_ensure_testcase_v3(self):
+        testcase_content = {
+            "config": {"name": "xxx", "base_url": "https://httpbin.org"},
+            "teststeps": [
+                {
+                    "name": "get with params",
+                    "request": {
+                        "method": "GET",
+                        "url": "/get",
+                        "params": {"foo1": "bar1", "foo2": "bar2"},
+                        "headers": {"User-Agent": "HttpRunner/3.0"},
+                    },
+                    "extract": [
+                        {"varA": "content.varA"},
+                        {"user_agent": "headers.User-Agent"},
+                    ],
+                    "validate": [
+                        {"eq": ["content.varB", 200]},
+                        {"lt": ["json.0.varC", 0]},
+                    ],
+                }
+            ],
+        }
+        self.assertEqual(
+            compat.ensure_testcase_v3(testcase_content),
+            {
+                "config": {"name": "xxx", "base_url": "https://httpbin.org"},
+                "teststeps": [
+                    {
+                        "name": "get with params",
+                        "request": {
+                            "method": "GET",
+                            "url": "/get",
+                            "params": {"foo1": "bar1", "foo2": "bar2"},
+                            "headers": {"User-Agent": "HttpRunner/3.0"},
+                        },
+                        "extract": {
+                            "varA": "body.varA",
+                            "user_agent": 'headers."User-Agent"',
+                        },
+                        "validate": [
+                            {"eq": ["body.varB", 200]},
+                            {"lt": ["body[0].varC", 0]},
+                        ],
+                    }
+                ],
+            },
+        )