The purpose of this research was to re-illuminated the artistic value of costume designs that had shared identical history with human beings through the formation and the progress of the newly introduced Russian avant-garde art. This resulted from the fact that the Russian avant-garde art changed the human esthetic sense through the trend of art that Natalia Goncharova introduced in the early 20th century. The research method defined the formation and progress of the development of the Neo-Primitivism centering the works of art by Natalia Goncharova. Based on this method, Goncharova designed the set and the costume designs for the Ballets Russes of Serge Diaghilev and studied the molding characteristics of the costumes worn in the performing art. The result were as follows. First of all, Goncharova's costume designs were all manufactured based on the theme of Russian folk art and genesis. In other words, Goncharova represented the Spanish passion, the Russian folk art Lubok, and Goldern cockerel or religious Icon-paintings in her costumes. she pursued straight lines and abstract shapes in her costume designs. her design displayed the Neo-Primitivism influence through the separation between the lines and the surfaces, which defined the costumes as a decorative art experiment. Therefore, the study of Goncharova had one realize that Neo-Primitivism was not only an art form of Avant-garde, but it also became the basis of the molding character of all the artworks. Natalia Goncharova reflected the miracle of the transformation of the early 20th century in their costume designs.