Chronic injury of the lumbar spine soft tissue is one of the common clinical disorders, mostly seen in two cases, one for the acute injury after the lack of formal treatment, so that the condition is prolonged, becoming a chronic lesion; the second case belongs to the chronic strain lumbar spine soft tissue injury, also known as chronic strain low back pain, mostly seen in wet and cold conditions workers. 1, acute lumbar back sprain sequelae acute lumbar sprain is very common, after treatment most patients can be healed, but there are still some cases due to early treatment errors, did not obtain satisfactory braking and fixation, damaged lumbar back muscle in a long time in the state of being stretched; or due to the frequent activities of the lumbar back, affecting the normal healing of the tissue; or due to conservative treatment of heavy manipulation massage and other operations, so that the healed Fibrous tissues are pulled apart again during conservative treatment, which can lead to chronic injury. In addition, serious lumbar back muscle lacerations, even if early treatment is reasonable, but due to the healing of the large scar tissue left behind on the normal activities of the spine and load tolerance is poor, easy to be stretched and relaxed, local degeneration and ischemia, forming a vicious circle, the disease repeatedly delayed, gradually become chronic course. 2, cumulative chronic injury If the patient suffers a trauma that is not enough to cause muscle ligament tear, or the low back muscle is under long-term tension, such as car drivers, sand turners and pit operators, etc., can cause excessive stretching of the low back muscle tissue and a point of attachment, resulting in a pre-fracture state. Local reactive inflammation, repeated chronic strain can make this process increasingly aggravated, and easy to form a vicious circle, resulting in chronic low back pain. 3, other factors In addition to the above reasons, climate change or the patient’s own immune status can also cause or promote the occurrence of this disease, such as endocrine disorders (especially common in women during menopause), serious illness and serious trauma after the immune function is low, are prone to trigger this disease. There are two reasons why low back pain is caused by cold and even seasonal climate changes: first, the cold lowers the pain threshold and the patient becomes more sensitive to pain than usual; second, the cold itself acts as a stimulus, causing the low back muscles to contract excessively, producing more surrogate products (such as lactic acid, etc.), which in turn form a new stimulus to the muscles. This repeated effect forms a vicious circle. Cold stimulation can cause vasoconstriction, which is not conducive to the discharge of metabolic wastes, and is not conducive to the supply of nutrients to the muscles, which in turn contributes to the degeneration of muscle fibers. As for humidity and chronic lumbar spine soft tissue injury, research shows that there is no obvious relationship between the two, but once the lumbar spine soft tissue injury occurs, humidity can often make low back pain increased, this is due to the heat transfer force of moist air for the non-moist air several times. Therefore, when in a humid environment, the human body is more susceptible to cold attack, and its adverse effects are worse than usual. Therefore, in both cold and humid conditions, back pain often seems more intense.