Grinding waist in clinical terms mainly refers to acute lumbar sprain, after lumbar sprain, first of all, we must actively pay attention to rest, preferably to sleep on a hard bed for 3-4 weeks, so that the injured soft tissue can be fully recovered. Intermittent cold compresses can be applied within 2 days of injury, cold compresses can occlude the bleeding capillaries, reduce local bleeding, reduce swelling and relieve pain. After 2 days of injury, local hot compresses can be applied to promote local blood circulation and facilitate the recovery of injured soft tissues. Oral anti-inflammatory and analgesic drug loxoprofen sodium, relieve muscle spasm drug ethylparisone hydrochloride, local use of flurbiprofen babu cream, for local pain points can also be closed treatment. If it is not very painful, you can perform functional exercises for the muscles of the low back in bed, such as three-point support, five-point support and swallow flying, etc. After 3-4 weeks, you can gradually get out of bed and walk under the fixation of a lumbar girth. It is important to avoid overdoing it and to take down the lumbar girth gradually, when resting in bed.