Injection buttocks have hard lumps for several years can not be eliminated through hot compresses, local exercise, surgery and other methods to improve. 1. Hot compresses: you can use hot towels or warm bags for local hot compresses or local massage to promote local blood circulation, to a certain extent, can relieve the symptoms. 2. Local exercise: local exercise can be appropriate to make the surrounding muscles active and promote local blood circulation, when the blood circulation is smooth, the hard lumps will gradually disappear. 3. Surgery: If the hard lump is large, affecting activities or aesthetics, surgery can be considered to remove the hard lump. If there are no uncomfortable symptoms, generally do not need special treatment, when there are uncomfortable symptoms, should go to the hospital in time for examination and treatment, to avoid the impact on the body.