Suit refers to western-style clothing, which is a European-style clothing relative to "Hanfu". In a narrow sense, it refers to a western-style coat or suit. For employees of companies and government agencies, suits are usually the first choice for men's wear on more formal occasions. The reason why suits are enduring is that they have profound cultural connotations. The mainstream suit culture is often labeled as "cultured, educated, gentlemanly and authoritative". Suits have always been the darling of men's wear kingdom, and "suits and ties" are often used to describe gentle gentlemen and handsome men. The main features of a suit are its crisp appearance, smooth lines and comfortable wearing. If you wear a tie or bow tie, you will look more elegant. In addition, in the increasingly open modern society, suits, as a clothing style, have also entered the ranks of women's wear, reflecting the independence and confidence of women as well as men. Some people call a suit a woman's ever-changing coat.

In addition, there are national standards for suits, such as GB/T 2664-2009 for men's suits, GBT 2665-2009 for women's suits and GBT 2666-2009 for men's and women's trousers.