diff --git a/python/graphscope/deploy/kubernetes/resource_builder.py b/python/graphscope/deploy/kubernetes/resource_builder.py
index 429aecf3e2c1..72a8a39a09c9 100644
--- a/python/graphscope/deploy/kubernetes/resource_builder.py
+++ b/python/graphscope/deploy/kubernetes/resource_builder.py
@@ -126,7 +126,13 @@ def get_image_pull_secrets(image_pull_secrets):
 
     @staticmethod
     def get_node_selector(node_selector):
-        return node_selector
+        import base64
+        import json
+
+        decoded_node_selector = base64.b64decode(node_selector).decode(
+            "utf-8", errors="ignore"
+        )
+        return json.loads(decoded_node_selector)
 
     @staticmethod
     def get_user_defined_volumes(udf_volumes):