The main clinical manifestations of lumbar muscle strain are lumbar muscle pain and weakness, generally without clear organic lesions, and only mild osteophytes, bending or straightening of physiological pronation on lumbar spine X-ray, also known as functional lumbago. The main symptoms: 1. lumbar pain: the symptoms will be aggravated after cold, bending for too long, and it is difficult to straighten the waist, and the symptoms can be reduced after proper activities and changing the position or sufficient sleep and rest, and the pain is generally limited to the waist and around the buttocks, and the pain range does not exceed below the thigh. 2. Lumbar weakness: there will be a “sprained feeling” if you are not careful, and the pain and weakness symptoms may be aggravated, and the lumbar movement may be impaired. Causes of lumbar muscle strain: 1. Accumulative injury: lumbar muscles, ligaments and other tissues are often strained in daily life, and small fiber fractures, bleeding and exudation will occur in the stressed tissues. Fat people who lack physical exercise for a long time, the weight shifts forward when standing, which also easily causes strain on lumbar ligaments and muscles, and this kind of lumbago is alleviated after rest and aggravated after exertion. 2, extended acute lumbar sprain: acute lumbar sprain is not treated thoroughly in the acute phase, the injured muscles, fascia and ligaments are poorly repaired, resulting in more scarring and adhesions, which will reduce the function of the lumbar region, with symptoms such as lumbar soreness, weakness and pain, and lumbar pain on rainy days, which cannot be cured for a long time. 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 lumbar region can also cause chronic lumbar back stiffness and pain. The daily attention of patients with lumbar muscle strain: 1. Eliminate the causative factors: If it is caused by the work posture, the labor conditions should be changed and the labor position should be improved for the cause. When doing physical labor, we should act according to our ability, not to grasp the brute strength, and it is best to stand up in a squatting position when carrying heavy objects. It is best to use a backrest chair to relax the lumbar muscles. 2.Rest and fixation: When the patient’s lumbar pain is heavy, he should rest in bed, preferably in 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. 3.Improve local blood circulation: massage, traction, local hot compress, ion introduction, ultrashort wave, audio and other methods can be used to relieve muscle spasm and improve blood circulation. 4, to prevent cold and wind: especially in autumn and winter. Summer sleep and sweating should also be careful not to let the waist cool. 5, medical gymnastics to prevent and control lumbar muscle strain: physical exercise has an important role in the prevention and control of lumbar muscle strain and functional recovery. You can do back extension exercises in the prone position (“small swallow fly”), supine “three-point” and “five-point” exercises, appropriate swimming and outdoor activities, to improve the lumbar back muscle to The stimulation of cold and warm changes is very beneficial. 6. If long-term low back pain occurs and the above methods are not effective, it is necessary to go to the appropriate hospital for some detailed examination, such as MRI, to exclude possible organic lesions.