In view of the originality of costume in Chinese culture, the appearance, design concept and social function of costume in historical period was analyzed and demonstrated by literature analysis method. The research shows that Chinese people attribute costume culture to Yellow Emperor, which reflects the characteristics of Chinese culture; Chinese past dynasties have Yu Fu Zhi, Che Fu Zhi and other laws and regulations to specify the clothing of different groups of people, hierarchical management system emphasizes the social value, and costume which represents peoples status is the tradition of Chinese costume system; the features of Chinese costume culture carry the heavy political baggage, and costume is an important part of national etiquette. Conducting social management and maintaining hierarchical order by clothing is the main content of costume system; ancient emperors clothing needs to show the ethical cultivation in all aspects, and officials express their professional ideas and moral worship by using their clothing. Clothes in the aspects of material, color, style and pattern endow the natural law, ethics, status and behaviors with many meanings. Having clothes and then considering their reasons is moral cultivation function of costume system; Chinese tunic suits created by SUN Yatsen emphasize the concepts of health, convenience and economy, and make the traditional concepts of costume system come to an end, which should become an important concept in Han Chinese clothing movement.