When you fall on your buttocks and it hurts, the first thing you need to do is to get X-rays, including X-rays of the sacrococcygeal area, X-rays of the lumbar spine, and X-rays of the pelvis. Lumbar fractures, sacrococcygeal fractures, and hip fractures are most likely to occur when you fall on your buttocks. If fracture is ruled out, routine blood circulation treatment can be carried out. Ice packs can be applied within 24 hours of the fall, and hot packs can be applied after 24 hours to promote blood circulation. Use conventional non-steroidal anti-inflammatory drugs, including celecoxib and meloxicam to relieve pain and eliminate inflammation. You can also use Chinese medicines such as Compound Injury Capsules and Active Blood Pain Relief Capsules to dredge the meridians, reduce swelling and pain, and invigorate blood circulation and remove blood stasis.