Abstract:Formed in the Qing Dynasty, Baozhu auspicious grass color painting is one of the official architectural color painting categories, with Manchu, Mongolian, Tibetan cultural and artistic characteristics, only decorated in the Qing Dynasty Palace Gate and the imperial tomb buildings. The painting on the Zhongzhou Road inside the eaves of the Duanmen is a unique example of Baozhu auspicious grass painting in the Qing Dynasty. The formation and role transformation of the elements of the auspicious grass of the precious Pearl have witnessed the creative process of the diversification of Chinese ancient architectural and decorative art. Based on the structural layout and decorative features of the auspicious grass color painting of Baozhu in the eaves of Duanmen, the author compares it with the traditional Manchu and Mengbaozhu auspicious grass color painting. To find the differences in the commonness, comb out the evolution of auspicious grass patterns of Baozhu, analyze the historical and artistic value contained in the painting of Color on the eaves of Duanmen, and demonstrate the uniqueness and uniqueness of the painting of auspicious grass patterns of Baozhu on the eaves of Duanmen.