Lumbar muscle strain is also called lumbar muscle injury, according to the onset of acute and chronic situation can be divided into acute lumbar injury, and chronic lumbar strain. For acute lumbar injury, its symptoms are: 1, lumbar pain, lumbar pain immediately after the injury, turn over when the activity can also have obvious aggravation, serious can’t sit up, can’t stand and walk, sometimes lumbar pain can spread to the buttocks or thighs, but will not spread to the calves and feet. The pain is characterized by obvious fixed pressure pain at the site of injury, which is the main basis for diagnosis and localization. 2.After the injury, there will be lumbar muscle spasm and limitation of lumbar activity, when the limitation of lumbar activity is obvious, any lumbar activity can make the pain aggravate. 3, with the lumbar intervertebral disc is identified as lumbar muscle injury, lumbar muscle injury of the lower limbs of the motor, sensory, reflexes and other checks, generally are not abnormal. For the symptoms of chronic lumbar strain, because the main slow onset, longer course, generally no obvious acute trauma history, mainly due to long-term engagement in stooping, or other lumbar poor posture under long-term work, labor, caused by the gradual onset of the situation, so it is generally lighter symptoms, often feel the lumbar soreness, heaviness, and activity and so on the lumbar discomfort, can be alleviated after rest. Of course, chronic lumbar muscle strain can not sit for a long time or stand for a long time, but also to change the position often. For lumbar muscle strain and lumbar intervertebral disc herniation is also a characteristic, the lower limbs of the nerve symptoms of sensory abnormalities basically will not appear.