The swelling of the buttocks after almost a month is still not good, it may be that there is internal suppuration or infection, or it may be because of the phenomenon of fracture, then it is best to go to the hospital for diagnosis, and according to the results of the examination for relevant treatment. 1. Pus or infection: If the local pus or infection occurs, it will lead to a long time to recover the swollen parts, then you can go to the hospital by letting the doctor through professional equipment to clean up the pus parts, and then use some anti-infection drugs such as oral cephalosporin drugs. 2. Fracture: If the part of the fall is more serious and there is a fracture, it will also affect the recovery, you can go to the hospital to do X-ray or CT examination to determine whether there is a fracture or not, and if there is a fracture, it can be treated by way of surgery if necessary. The occurrence of this situation should be highly attention, timely treatment, to prevent the delay period led to the aggravation of the condition.