Standing for a long time appeared back pain is mainly due to two reasons: the first case, is due to the muscle tissue overwork after standing for a long time and strain, that is, the case of lumbar muscle strain. This will produce lactic acid and inflammation on the peripheral nerves to produce stimulation, so there is the symptom of soreness. The second condition is due to some chronic aseptic inflammatory lesions in the lumbar region, such as acute lumbar sprains, or chronic aseptic inflammatory lesions arising from surrounding osteophytes and calcifications, which can lead to local inflammation when standing for a long time and accompanied by cold, resulting in more and more lactic acid accumulation and soreness. After this situation can usually take the following approach: first, to choose the left limb for weight bearing, so that the right side of the muscle tissue can relax, wait until the left side of the slight soreness and then switch to the right side, so that the left side of the muscle can relax. If both sides are sore, you can stand with knee flexion and relax the muscles in the lumbar region, and alternate between the three methods to effectively avoid the symptoms of back pain. Secondly, you can go to the massage department for massage treatment, which can effectively relax the muscles, increase blood circulation, release adhesions and promote inflammation and lactic acid metabolism, and then the symptoms can be significantly relieved.