Low back pain with a salt bag compress does not have any practical significance, first, the salt itself does not have anti-inflammatory and analgesic effect as well as blood circulation and blood stasis, there is no real meaning to pain relief. Secondly, the local compression of the salt bag will lead to the aggravation of local symptoms, and may even produce the opposite effect. When the back pain can take physical therapy, physical therapy is mainly related to heat therapy and local massage and so on. Heat therapy can take hot water bags of hot compresses, spectrum irradiation, baking electricity, moxibustion, can promote the local blood circulation, effective relief of pain symptoms. Local massage is also conducive to the dissipation of local inflammation and promote the recovery of local tissues. Therefore, there is no real point in using salt bags for back pain, you can go to the hospital for a detailed examination and take the appropriate treatment after a clear diagnosis.