Whenever you bend your back, it hurts to stand upright, which is fine. It may be lumbar muscle strain or lumbar disc herniation. If it is a mild lumbar muscle strain or lumbar disc herniation, generally can be self-healing. But if it is a severe lumbar muscle strain or lumbar disc herniation, generally can not be self-healing. 1. Self-healing: For mild lumbar muscle strain or lumbar disc herniation, you should pay attention to rest, avoid overwork, develop good habits of work and rest, and pay attention to warmth, avoid cold stimulation. At the same time, appropriate lumbar and dorsal muscle function exercise, such as small swallow fly exercise method, generally will gradually heal itself. 2. Can not be self-healing: for severe lumbar muscle strain or lumbar disc herniation patients, need to be treated under the guidance of a doctor, such as severe pain can be oral non-steroidal anti-inflammatory drugs, but also can take the way of physical therapy treatment, the symptoms can only be relieved. The symptoms of pain when bending over and standing upright are fine, you should consult a doctor in time, ask the doctor to clarify the specific cause, and if necessary, carry out the appropriate treatment.