Abstract:Traditional Chinese architecture is unique in the world architecture system with its distinctive structure and shape. Eaves wing Angle, with its beautiful outline, has become one of the main symbols of traditional Chinese architecture. This paper discusses how to carry on the reform and innovation on the basis of inheriting the traditional technology, and the method in the design, construction and lofting process of cornices wing Angle. This paper tries to synthesize a relatively clear and fast drawing and expression method from the existing methods to simplify the design process, so that it can be popularized and applied in antique building engineering.