diff --git a/ate/runner.py b/ate/runner.py
index 35c5b43b..2aa7a554 100644
--- a/ate/runner.py
+++ b/ate/runner.py
@@ -51,7 +51,7 @@ class Runner(object):
         @param (str) context level, testcase or testset
         """
         # convert keys in request headers to lowercase
-        config_dict = utils.lower_dict_key(config_dict)
+        config_dict = utils.lower_config_dict_key(config_dict)
 
         self.context.init_context(level)
         self.context.config_context(config_dict, level)
diff --git a/ate/utils.py b/ate/utils.py
index f8145757..aea20f3f 100644
--- a/ate/utils.py
+++ b/ate/utils.py
@@ -300,7 +300,7 @@ def lower_dict_key(origin_dict, depth=1):
     new_dict = {}
 
     for key, value in origin_dict.items():
-        if depth > 2:
+        if depth >= 2:
             new_dict[key] = value
             continue
 
@@ -311,6 +311,17 @@ def lower_dict_key(origin_dict, depth=1):
 
     return new_dict
 
+def lower_config_dict_key(config_dict):
+    """ convert key in config dict to lower case, convertion will occur in two places:
+        1, all keys in config dict;
+        2, all keys in config["request"]
+    """
+    config_dict = lower_dict_key(config_dict)
+    if "request" in config_dict and isinstance(config_dict["request"], dict):
+        config_dict["request"] = lower_dict_key(config_dict["request"])
+
+    return config_dict
+
 def convert_to_order_dict(map_list):
     """ convert mapping in list to ordered dict
     @param (list) map_list
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 8a591e22..37d7faa5 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -222,7 +222,7 @@ class TestUtils(ApiServerUnittest):
         self.assertFalse(utils.is_variable(("os", os)))
         self.assertFalse(utils.is_variable(("utils", utils)))
 
-    def test_lower_dict_key(self):
+    def test_handle_config_key_case(self):
         origin_dict = {
             "Name": "test",
             "Request": {
@@ -234,7 +234,7 @@ class TestUtils(ApiServerUnittest):
                 }
             }
         }
-        new_dict = utils.lower_dict_key(origin_dict)
+        new_dict = utils.lower_config_dict_key(origin_dict)
         self.assertIn("name", new_dict)
         self.assertIn("request", new_dict)
         self.assertIn("method", new_dict["request"])