Baima Tibetans have a long history and unique traditional culture. They are mainly distributed in the alpine valleys at the junction of Pingwu, Songpan, Jiuzhaigou and Wenxian, Gansu. Due to the special geographical environment, economic culture, national culture, religious beliefs and other factors, Baima Tibetans have retained their original cultural characteristics in many aspects, among which costume culture is the most typical, and in costume culture, the bright and harmonious colors of costumes are a prominent feature. Baima Tibetan people living in high mountains and valleys have a strong visual impact and soul shock from the color of their costumes. Baima people fully incorporate religious belief and worship of nature into the concept of clothing color. On the whole, the color of clothing likes bright and strong, and the contrast is strong. From the perspective of color composition, red, white and black are mainly used, and other colors such as blue, green and yellow are also used. We can clearly see this feature in the clothes worn by Baima Tibetans. Pleated clothes are women's clothes, with bright colors, strange patterns and exquisite workmanship, which can be called a unique costume. Pleated clothes are in the form of long skirts, and the back is folded in a fan shape and sewn with green, yellow, blue, color and other fabrics. Wearing a delicate and beautiful tank top, the tank top is mainly black and red, and this overall color form is also inherited in the pattern of pleated clothes: red, white and black are the basic colors, while other colors such as blue, green and yellow are subordinate. At the same time, attention is paid to color contrast and coordination, and bright and lively colors are unified in the calm black and dark blue background. Chunna is a white man's long gown, mostly white and cyan, with reddish-brown lace at the neckline and hem. The costumes of Baima Tibetan people show bright and elegant aesthetic characteristics because of their ingenious combination.