In principle, there is no fastest way to reduce the swelling of the buttocks, need to be combined with the cause of the treatment, such as the surface, generally related to trauma; if it is the anal opening, it is considered to be hemorrhoids, perianal abscesses and other diseases caused by. You can take appropriate treatment according to the cause. 1. Trauma: If the buttocks are injured, causing swelling, you can first use ice water bags for ice, and then use hot water bags to apply hot compresses after 48 hours. Safflower oil and other drugs can be used externally to promote blood circulation and speed up the swelling. 2. Hemorrhoids: mainly occur in the anal opening, and long-term sedentary, constipation and other factors. Currently need to improve the bad habits, eating habits, hemorrhoids flare-ups can be used externally Ma Yinglong musk hemorrhoid cream, chlorhexidine hemorrhoid suppository and other drugs. If the hemorrhoids are more serious, the hemorrhoid core prolapse, it is recommended to do hemorrhoidectomy as soon as possible. 3. Perianal abscess: should pay attention to anal hygiene, insist on washing with warm water. Combined bacterial infection, need oral cefixime, amoxicillin and other antibiotic treatment, there is a purulent reaction, need to incise and drain. The buttocks are swollen, there may be other causes, you need to consult the doctor in time, improve the examination, clear diagnosis and follow the doctor’s instructions for treatment.