Abstract:The wing angle lifting and the big wood folding together constitute a beautiful concave curved line of the ancient building roof. The wing angle of the ancient building in China is diverse and highly recognizable, which has important mechanical functions and aesthetic value. Based on the improvement of the quality of today's ancient construction projects, this paper provides a theoretical reference. Through the research of historical documents and cases, the paper uses the chart method to systematically sort out the origin and development of China's wing horns. The overall trend of the germination of the Qin and Han Dynasties, the prosperity of the Tang Dynasty, the use of the Song Dynasty, and the stabilization of the Ming and Qing Dynasties; the analysis of the regional characteristics, standards and causes of the north and south of the ancient Chinese wing horns; hoping to better inherit the construction wisdom of Chinese ancient building wing angles in the context of today's rapid urbanization.