Pain in the left buttock may be caused by fascial inflammation, hip muscle injury, sciatic nerve pain and other diseases. It is necessary to clarify the causes and give corresponding treatment. If you are overworked for a long time and often get cold, it will cause fasciitis in the muscles of the buttocks. In this case, you can take non steroidal anti-inflammatory drugs, such as ibuprofen, celecoxib and other drugs to relieve pain. If the muscle on the left side of the buttock is injured, causing pain caused by hematoma, ice can be used for local cold compress in the acute phase. The next day can be changed to hot towel, hot water bag hot compress to accelerate local blood circulation, combined with the application of blood activating and stasis removing ointment, and the application of infrared physiotherapy can gradually alleviate the pain. If the pain is caused by the compression of the sciatic nerve on the left side of the buttock, acupuncture, massage, physiotherapy and other methods can be given to relieve the pain.