diff --git a/AUTHORS b/AUTHORS
index e36a10edb..f048657d7 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -286,6 +286,7 @@ Prashant Sharma
 Pulkit Goyal
 Punyashloka Biswal
 Quentin Pradet
+q0w
 Ralf Schmitt
 Ram Rachum
 Ralph Giles
diff --git a/changelog/10626.bugfix.rst b/changelog/10626.bugfix.rst
new file mode 100644
index 000000000..c3c7ef778
--- /dev/null
+++ b/changelog/10626.bugfix.rst
@@ -0,0 +1 @@
+Fix crash if ``--fixtures`` and ``--help`` are passed at the same time.
diff --git a/src/_pytest/config/__init__.py b/src/_pytest/config/__init__.py
index 25f156f8b..bd2611df6 100644
--- a/src/_pytest/config/__init__.py
+++ b/src/_pytest/config/__init__.py
@@ -998,6 +998,8 @@ class Config:
         self.hook.pytest_addoption.call_historic(
             kwargs=dict(parser=self._parser, pluginmanager=self.pluginmanager)
         )
+        self.args_source = Config.ArgsSource.ARGS
+        self.args: List[str] = []
 
         if TYPE_CHECKING:
             from _pytest.cacheprovider import Cache
@@ -1337,8 +1339,8 @@ class Config:
 
     def parse(self, args: List[str], addopts: bool = True) -> None:
         # Parse given cmdline arguments into this config object.
-        assert not hasattr(
-            self, "args"
+        assert (
+            self.args == []
         ), "can only parse cmdline args at most once per Config object"
         self.hook.pytest_addhooks.call_historic(
             kwargs=dict(pluginmanager=self.pluginmanager)
diff --git a/testing/python/fixtures.py b/testing/python/fixtures.py
index 3ce5cb34d..d996f80bb 100644
--- a/testing/python/fixtures.py
+++ b/testing/python/fixtures.py
@@ -3338,6 +3338,10 @@ class TestShowFixtures:
         config = pytester.parseconfigure("--funcargs")
         assert config.option.showfixtures
 
+    def test_show_help(self, pytester: Pytester) -> None:
+        result = pytester.runpytest("--fixtures", "--help")
+        assert not result.ret
+
     def test_show_fixtures(self, pytester: Pytester) -> None:
         result = pytester.runpytest("--fixtures")
         result.stdout.fnmatch_lines(