diff --git a/python/ray/autoscaler/sdk/sdk.py b/python/ray/autoscaler/sdk/sdk.py
index 4299fccdf..42c5557ac 100644
--- a/python/ray/autoscaler/sdk/sdk.py
+++ b/python/ray/autoscaler/sdk/sdk.py
@@ -240,6 +240,22 @@ def request_resources(
         >>> request_resources( # doctest: +SKIP
         ...     bundles=[{"CPU": 1}, {"CPU": 1}, {"CPU": 1}])
     """
+    if num_cpus is not None and not isinstance(num_cpus, int):
+        raise TypeError("num_cpus should be of type int.")
+    if bundles is not None:
+        if isinstance(bundles, List):
+            for bundle in bundles:
+                if isinstance(bundle, Dict):
+                    for key in bundle.keys():
+                        if not (isinstance(key, str) and isinstance(bundle[key], int)):
+                            raise TypeError(
+                                "each bundle key should be str and value as int."
+                            )
+                else:
+                    raise TypeError("each bundle should be a Dict.")
+        else:
+            raise TypeError("bundles should be of type List")
+
     return commands.request_resources(num_cpus, bundles)
 
 
diff --git a/python/ray/tests/test_autoscaler.py b/python/ray/tests/test_autoscaler.py
index f4f3c198f..772492a5b 100644
--- a/python/ray/tests/test_autoscaler.py
+++ b/python/ray/tests/test_autoscaler.py
@@ -3561,6 +3561,21 @@ MemAvailable:   33000000 kB
                     monitor.run()
                 mock_publish.assert_called_once()
 
+    def testInitializeSDKArguments(self):
+        # https://github.com/ray-project/ray/issues/23166
+        from ray.autoscaler.sdk import request_resources
+
+        with self.assertRaises(TypeError):
+            request_resources(num_cpus="bar")
+        with self.assertRaises(TypeError):
+            request_resources(bundles="bar")
+        with self.assertRaises(TypeError):
+            request_resources(bundles=["foo"])
+        with self.assertRaises(TypeError):
+            request_resources(bundles=[{"foo": "bar"}])
+        with self.assertRaises(TypeError):
+            request_resources(bundles=[{"foo": 1}, {"bar": "baz"}])
+
 
 def test_import():
     """This test ensures that all the autoscaler imports work as expected to