During the Western Zhou Dynasty,the ritual system was emphasized,and the Zhou Rites permeated various fields such as politics,economy and culture,establishing a strict dress system from top to bottom.The formation of the Shenyi system gradually transitioned from the upper garment and lower garment system to the form of connecting upper and lower garments.Influenced by the strict social hierarchy regulations of the Western Zhou Dynasty,the Shenyi system was a dress system constrained by rituals,laws and systems.This paper studies the formation of Zhou Rites and Shenyi system.