diff --git a/setup.py b/setup.py
index ae2189fa1..1cbc55a3a 100644
--- a/setup.py
+++ b/setup.py
@@ -24,7 +24,7 @@
     "expiringdict",
 ]
 
-service_requires = ["docker", "pymongo", "pymysql"]
+service_requires = ["docstring_parser", "docker", "pymongo", "pymysql"]
 
 doc_requires = [
     "sphinx",
diff --git a/src/agentscope/service/service_factory.py b/src/agentscope/service/service_factory.py
index b1b9e9d03..d717c6960 100644
--- a/src/agentscope/service/service_factory.py
+++ b/src/agentscope/service/service_factory.py
@@ -14,7 +14,10 @@
     get_origin,
 )
 
-from docstring_parser import parse
+try:
+    from docstring_parser import parse
+except ImportError:
+    parse = None
 from loguru import logger