The possibility of swelling lines on the buttocks is high. Swelling lines mostly occur during adolescence or pregnancy, when weight gain or excessive growth will lead to the breakage of skin elastic fibers, thus forming swelling lines. The early stage of swelling lines is a purplish-red raised stripe, and the late stage is a silvery-white stripe, which has no effect on health and does not require excessive treatment. There is no specific treatment for silvery-white streaks. Newly appearing streaks can be reduced by topical application of vitamin A cream or cosmetic laser treatment, but for silvery-white streaks, there is no effective treatment and excessive treatment is not recommended. It is important to control weight and avoid excessive growth, and to avoid the systematic use of glucocorticoids.