Expression method and aesthetic expression of fashion design from different essential perspectives is the main focus of this study. From ancient times to the present, people's pursuit of the natural beauty of clothing has been expressed in both the East and the West. The multi-dimensional evaluation model of clothing beauty combines various factors. It is a comprehensive evaluation model of clothing beauty. By using scientific calculation methods to evaluate clothing beauty in multiple dimensions, it helps to better integrate design into art and life. The real meaning of the beauty of simplicity in fashion design lies in respecting the existence of natural forms and focusing on the harmony of nature.