There are times when people feel soreness and weakness in the lumbar region, and the symptoms are aggravated by cold, bending for too long, and difficulty in straightening the lumbar region, but the symptoms can be alleviated after proper activity and change of position or sufficient sleep and rest. However, when you go to the hospital to have an X-ray of the lumbar spine, there is usually no clear organic lesion, only mild osteophytes, bending or physiological foreshortening, which is lumbar strain, also known as functional lumbago. The causes of lumbar muscle strain injury are generally as follows: 1. Accumulative injury: due to work requirements, poor posture and other factors, lumbar muscles, ligaments and other tissues in daily labor in a long-term non-physiological posture, often subject to strain, stress on large tissues, there will be small fiber fractures, bleeding and exudation, fracture tissue repair and bleeding, exudation is absorbed, can be left scar and tissue adhesion, these tissues are easy to These tissues can easily pull or compress the inner nerve fibers and cause back pain. Fat people who lack physical exercise for a long time and shift their center of gravity forward when standing are also likely to cause lumbar ligament and muscle strain, and this kind of lumbar pain is relieved after rest and aggravated after exertion. 2, extended acute lumbar sprain: sometimes in sports, we will have acute lumbar sprain, acute lumbar sprain in the acute phase such as incomplete treatment, injury to the muscle, fascia, ligament repair, produce more scarring and adhesions, will reduce the function of the waist, appear lumbar soreness, weakness, pain and other symptoms, cloudy and rainy days, then lumbar pain, long time can not be cured. 3, lumbar myofasciitis: for a kind of sterile inflammation, long-term bending or sitting work, will make the lumbar back muscle in a long-term strain state, the development of spasm, ischemia, edema, adhesions, this sterile inflammation can cause low back pain. 4, other causes: congenital spinal deformity, structural or functional defects of the lower limbs can lead to strain on the low back tissues. Weakness and visceral lesions can also reduce the stress capacity of the low back. Increased weight bearing on the lower back during late pregnancy can also lead to strain injury. Prolonged exposure to wind and cold in the lower back can also cause chronic low back stiffness and pain. So how should patients be treated if they have a lumbar strain? First of all, we should eliminate the causative factors: if it is caused by the working posture, we should change the working conditions and improve the working position in response to the cause. When doing physical labor, you should do it according to your strength, not to grasp the brute strength, when carrying heavy objects, it is best to stand up in a squatting position. The best way to relax the lumbar muscles is to use a backrest chair. Secondly, when the patient’s lumbar pain is heavy, he should rest in bed, preferably on a hard bed, or temporarily protected by a lumbar girth. However, it should be noted that the lumbar girth should not be worn continuously, and appropriate back and lumbar muscle exercises should be carried out every day. Massage, traction, local hot compress, ion introduction, ultrashort wave, audio and other methods can be used to relieve muscle spasm and improve blood circulation. At the same time, it is important to prevent from getting cold and wind.