Lumbar muscle strain do ultrasound generally no abnormal performance, can not check out. Lumbar muscle strain is mostly due to the accumulation of lumbar muscles, fascia, ligaments and other soft tissues, mechanical, chronic injury or acute lumbar sprain, did not get timely and effective treatment, and turned into a chronic lesion caused by aseptic inflammation. The main manifestations are hidden pain in the lumbar region, recurrent attacks, aggravated by exertion and other symptoms. Doctors mainly combine the patient’s medical history, symptoms, physical examination and imaging tests to make a comprehensive judgment. If the patient is engaged in physical labor for a long time or keeps a fixed posture for a long time, recurrent low back pain, not accompanied by symptoms of the lower limbs, etc., and the pressure point is more extensive. ultrasound usually has no abnormal findings, and elderly patients can find lumbar spine osteoporosis or osteomalacia, and a small number of patients can be accompanied by spinal deformity. When there is recurrent pain in the lower back or a history of long-term low back pain, it is recommended to seek medical attention in a timely manner.