On Saturday, June 29, 2019, the Pearl Art Museum was honored to invite Li Zhuo, an associate professor at the School of Fashion Art and Design, Donghua University, to give a lecture in the Heart Hall. By comparing the images and objects of Byzantine and Slavic costumes, this paper makes a thorough analysis of the styles, structures and patterns of female costumes and accessories in Mucha's works, and explores costumes expressions in the works. Moreover, interpreting the Mucha art in the costume culture code.