This paper discusses characteristics of habitat segregation of Hui's Residential District in Xi'an Old Castle based on field surveys. The major objective of this study is to compare the Muslim cities and the Chinese cities focusing on the urban tissues. Now, Hui's residential district is located on from the central to the northwest region in Xi'an Old Castle, where Hui believe in Islam are living and gathering together.
We, firstly, clarify a distribution of habitat segregation, especially in terms of “huizu” district and “hanzu” district. We clarify typology of houses and form of possession through segregation, and characteristics of district based on number of households and residents. This paper shows clear differences between the Hui's residential district and general blocks in Xi'an Old Castle.