The purpose of this paper is to clarify spatial composition of Muya Tibetan house. In conclusion, (1)The houses have three stories. As going up, the spatial hierarchy grows high. (2) People live on the second floor. The main room is square. The column which is touched by divinity is placed in the center of this room. (3) The main room is divided into two spatial sections, which are male space and female space, by this diagonal axes. These principles of spatial composition are similar to Qiang's. (4) The southeastern corner is the most dominant space in the main room. And the northwestern corner is the most subordinate.