Depending on the severity of the condition, it may take about 2 weeks to 3 months to recover from a back injury. 1. Mild condition: If it is simple soft tissue injury, it can reduce the lumbar activities, more bed rest, can take oral celecoxib and other non-steroidal anti-inflammatory analgesic drugs under the guidance of the doctor, but also oral panax ginseng tablets and other medications to activate blood circulation and eliminate blood stasis, but also feasible to lumbar acupuncture, tui-na, magnetic therapy and other therapies to improve the circulation, and promote the repair of the damage, it usually takes 2 weeks to recover. 2. Serious condition: If the situation is serious after flashing to the waist, especially the osteoporosis or the existence of pathological bone lesions in the elderly, pathological fracture of the lumbar vertebrae can occur, requiring strict bed rest, if necessary, need to perform surgical treatment, usually takes about 3 months to recover. After the flash to the waist should be timely medical consultation, under the guidance of specialized doctors to actively carry out appropriate treatment, will help the early recovery of the injury.