In the diversified social development environment,with the enhancement of national comprehensive strength,China-fashion illustration in modern illustration design application range is very wide,the Chinese traditional painting as the main element,and the new era of the trend of elements fully integrated,jointly introduced into the illustration design link,giving new significance to it.At present,the development of modern illustration design industry has brought more new ways of expression for China's traditional painting.Through the China-fashion illustration application in modern illustration design of detailed and comprehensive analysis,this paper focus from the product,mobile interaction,posters and packaging four design level analysis,the China-fashion painting culture connotation fully display,bring the visual impact,create a new art form,promote the diversified development of modern illustration design industry.