Abstract So-called siheyun south ZhengFang, is that, in the room, and things around the middle chamber of plane layout courtyard forming traditional housing collectively. Siheyun has a long history, and distribution in China is extensive, dwelling position of chief, known as the traditional residence in han residents of authentic model. The siheyun of Beijing existing Ming and qing dynasties, is the belongings. The siheyun of Beijing for its unique architectural style and construction mode, become China northern four fit the representative, local-style dwelling houses building stands for curtilage because curtilage, had to save people curtilage supporting mutually, theology of heaven and earth, is the ancient Chinese architecture spirit highest realm. Siheyun is China residence flower in the history of architecture. This article on the characteristics of Beijing siheyun architectural made the preliminary discussion with protection.Key Words： Ayout, Structure ， Coloring ， Protection目 录中 文 摘 要 .......................................................................................................2Abstract.........................................................................................................................................31.四 合 院 的 布 局 .....................................................................................11.1 四 合 院 的 布 局 ..................................................................................11.1.1 四 合 院 的 平 面 形 式 ................................................................11.1.2 四 合 院 的 平 面 布 局 ................................................................11.2 四 合 院 的 空 间 组 合 ....................................................................21.3 四 合 院 内 空 间 分 隔 .............
