If you have pain from stretching your waist, in most cases it is considered to be an acute sprain of the waist. First of all, we should actively sleep on a hard bed to rest, strengthen warmth, avoid getting cold, it is best to sleep on a hard bed to rest for 3-4 weeks, oral anti-inflammatory and analgesic drug loxoprofen sodium, to relieve muscle spasm drug ethylparisone hydrochloride, local can use flurbiprofen babu cream, can also be applied to fotalin ointment. Intermittent cold compresses can be applied within two days of the sprain to occlude the bleeding capillaries, reduce bleeding and swelling, and local hot compresses can be applied two days after the injury to promote local blood circulation, speed up the supply of oxygen and nutrients, and promote the recovery of injured soft tissues. If it is not very painful, you can carry out functional exercises for the muscles of the low back, 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 the lumbar girth, gradually and avoid overdoing it.