In relation to the geographical positions,the climate features,the natural,historical forming conditions of the traditional folk house and courtyard in Zhangjiakou,the plane types,building materials,and the distributions of the main buildings function are analyzed.The features of the various types of the traditional folk-house courtyards are expounded.All the beautiful,close and neat building of the three or four section compounds,the simple-styled kiln building courtyards in the Lower Dam Area,and the wide,open,free and flexible layouts of the round courtyards in the Upper Dam Area represent the adaptability of the folk-house courtyards to the environment and the inhabitants' ways of life in the various areas of Zhangjiakou.