Songyun culture,as an important expression of Song dynasty culture,provides a rich source of inspiration for contemporary design innovation.As an important part of Songyun culture,floral patterns'application in costume narrative design shows the perfect fusion of traditional culture and modern design.This paper discusses the methods and innovative practice expression of floral patterns in costume narrative design,so as to realize the transmission of cultural value and the display of artistic beauty,and provide a new perspective and ideas for modern fashion design.