Louis Kahn mainly focuses his served and servant relationship on architecture scale. In my opinion, this relationship is happening anywhere, such as city, industry, agriculture, mechanical and so on. My proposal is to further develop the served and servant theory to urban design. In this case, there is a served and servant relationship in the building. And also the building serves the city as a servant object. There is a new served and servant relationship established between the city and the building. Thus, two served and servant relationships are happening at the same time.