The clinical manifestations of lumbar muscle strain include lumbar pain and limitation of lumbar spine activities. 1. Lumbar pain: lumbar muscle strain occurs mostly in sedentary or often do tired work people. It is mainly recurring lumbar distension or soreness, and the pain is aggravated when turning around or standing up, and the symptoms can be slightly relieved by appropriate activities or changing the body position. The pain may radiate to the buttocks. The pain is recurrent and worsens after exposure to cold or exertion. There can be pressure points on both sides of the lumbar spine. 2. Lumbar spine activity limitation: lumbar muscle strain, if serious, will cause lumbar spine activity limitation, such as bending activity limitation, turn over pain, unfavorable activities, generally no leg symptoms. When the above situation is considered lumbar muscle strain, if repeated episodes of timely examination in the hospital to clarify the cause and targeted treatment.