diff --git a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_function.rst b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_function.rst
index ac51245b11d348169cdbd887e72185971cb649f4..5c1bfd24358fa9c0edb8a5f5054e0d5a86920034 100644
--- a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_function.rst
+++ b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_function.rst
@@ -32,7 +32,10 @@ yr.cpp_function
 
        >>> import yr
        >>> yr.init()
-       >>> cpp_function_urn = "sn:cn:yrk:12345678901234561234567890123456:function:0-yr-mycpp:$latest"
+       >>> cpp_function_urn = (
+       ...     "sn:cn:yrk:12345678901234561234567890123456:"
+       ...     "function:0-yr-defaultservice-cpp:$latest"
+       ... )
        >>> square_func = yr.cpp_function("Square", cpp_function_urn)
        >>> result = square_func.invoke(5)
        >>> print(yr.get(result))
diff --git a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_instance_class.__init__.rst b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_instance_class.__init__.rst
index 0a68294dc954bdba1894000dda212437f0e88bc6..0184227ce5e7826749fa1c8e2bc632a7caa311d7 100644
--- a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_instance_class.__init__.rst
+++ b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.cpp_instance_class.__init__.rst
@@ -10,7 +10,7 @@ yr.cpp_instance_class.__init__
     参数：
         - **class_name** (str) – cpp 类名。
         - **factory_name** (str) – cpp 类静态构造函数名。
-        - **function_urn** (str, optional) – 函数 urn，默认为 ``sn:cn:yrk:12345678901234561234567890123456:function:0-defaultservice-py:$latest``。
+        - **function_urn** (str, optional) – 函数 urn，默认为 ``sn:cn:yrk:12345678901234561234567890123456:function:0-defaultservice-cpp:$latest``。
 
     样例：
 
@@ -46,7 +46,11 @@ yr.cpp_instance_class.__init__
 
        >>> import yr
        >>> yr.init()
-       >>> counter_class = yr.cpp_instance_class("Counter", "Counter::FactoryCreate")
+       >>> cpp_function_urn = (
+       ...     "sn:cn:yrk:12345678901234561234567890123456:"
+       ...     "function:0-yr-defaultservice-cpp:$latest"
+       ... )
+       >>> counter_class = yr.cpp_instance_class("Counter", "Counter::FactoryCreate", cpp_function_urn)
        >>> opt = yr.InvokeOptions(cpu=1000, memory=1024)
        >>> ins = counter_class.options(opt).invoke(11)
        >>> result = ins.Add.invoke(9)
diff --git a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_function.rst b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_function.rst
index adca918a82a1d7a8b6ea84f3459044fdbf7f7fd6..f83de0a12d1f503af9f100c31a9bb0f9149551ff 100644
--- a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_function.rst
+++ b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_function.rst
@@ -31,7 +31,10 @@ yr.java_function
 
        >>> import yr
        >>> yr.init()
-       >>> java_function_urn = "sn:cn:yrk:12345678901234561234567890123456:function:0-yr-myjava:$latest"
+       >>> java_function_urn = (
+       ...     "sn:cn:yrk:12345678901234561234567890123456:"
+       ...     "function:0-yr-defaultservice-java:$latest"
+       ... )
        >>> java_add = yr.java_function("com.yuanrong.demo.PlusOne", "PlusOne", java_function_urn)
        >>> result = java_add.invoke(1)
        >>> print(yr.get(result))
diff --git a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_instance_class.rst b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_instance_class.rst
index 01b89ffd44c4b570260df4a5de3fec480e5fce71..60407691305762d4ee52245cc8122c983f501d2b 100644
--- a/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_instance_class.rst
+++ b/docs/multi_language_function_programming_interface/api/distributed_programming/zh_cn/Python/yr.java_instance_class.rst
@@ -42,7 +42,10 @@ yr.java_instance_class
 
        >>> import yr
        >>> yr.init()
-       >>> java_function_urn = "sn:cn:yrk:12345678901234561234567890123456:function:0-yr-myjava:$latest"
+       >>> java_function_urn = (
+       ...     "sn:cn:yrk:12345678901234561234567890123456:"
+       ...     "function:0-yr-defaultservice-java:$latest"
+       ... )
        >>>
        >>> java_instance = yr.java_instance_class("com.yuanrong.demo.Counter", java_function_urn).invoke(1)
        >>> res = java_instance.Add.invoke(5)