If you fall on your back, you can make a preliminary judgment of the condition according to the local performance. If the pain is only mild and does not affect normal standing and walking, it generally belongs to soft tissue injury, local with creams such as pain relief creams, painful cases can be coated with Furtalin, or oral painkillers such as Aminotrimadol. Appropriate bed rest for 2-3 days can generally be significantly relieved, temporarily avoid repeated bending, straining, heavy physical labor. If the lumbar pain is obvious, especially if it affects normal standing and walking, pay attention to the possibility of lumbar fracture, you need to go to orthopedic department to see a doctor in a timely manner, and the lumbar area needs routine X-ray examination to determine whether there is a fracture. If there is a fracture, bed rest for 1-2 months is required in less serious cases, and you can wear a lumbar brace to get up and move around after the pain is significantly relieved. If it is a serious fracture, surgery needs to be considered if necessary.