diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index ebffeb3f..a74f69de 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -2,6 +2,7 @@
 
 ## 3.1.8 (2022-03-22)
 
+- fix: keep negative index in jmespath unchanged when converting pytest files, e.g. body.users[-1]
 - change: load yaml file with FullLoader
 
 ## 3.1.7 (2022-03-22)
diff --git a/httprunner/compat.py b/httprunner/compat.py
index 4d76efda..c14c9d1f 100644
--- a/httprunner/compat.py
+++ b/httprunner/compat.py
@@ -58,9 +58,11 @@ def _convert_jmespath(raw: Text) -> Text:
 
     raw_list = []
     for item in raw.split("."):
-        if "-" in item:
+        if "-" in item and "[-" not in item:
             # add quotes for field with separator
             # e.g. headers.Content-Type => headers."Content-Type"
+            # also need to avoid replacing negative index in jmespath
+            # e.g. body.users[-1] => body.users[-1], keep unchanged
             item = item.strip('"')
             raw_list.append(f'"{item}"')
         elif item.isdigit():
diff --git a/tests/compat_test.py b/tests/compat_test.py
index d0a1dec0..987b1785 100644
--- a/tests/compat_test.py
+++ b/tests/compat_test.py
@@ -45,6 +45,10 @@ class TestCompat(unittest.TestCase):
             compat._convert_jmespath("body.data.buildings.0.building_id"),
             "body.data.buildings[0].building_id",
         )
+        self.assertEqual(
+            compat._convert_jmespath("body.users[-1]"),
+            "body.users[-1]",
+        )
         with self.assertRaises(SystemExit):
             compat._convert_jmespath("2.buildings.0.building_id")