9090 degree enclosed courtyard

The utility model relates to a low-density house which overcomes the problem that functions of ventilation and lighting and privacy of the low-density house are hard to be processed simultaneously, and the utility model builds a 90-degree courtyard house which includes gazeboes, courtyards, stairs, corridors, balconies and three layers of residential buildings aboveground of function rooms, each layer of the courtyard house is the squared figure configuration, the central mid-grid and the rear mid-grid of each layer are designed into a central courtyard communicating with the outside upwards from the first floor, then the courtyard house can carry out the backward and forward and longitudinal ventilation and lighting, and can also implement the up and down vertical ventilation and lighting by the central courtyard; and other unit grids are also strategically hollowed and are designed into inner balconies or gazeboes, then each layer has one or two gazeboes having different orientations, thus the resident can