Lumbar muscle strain is always sore is the lumbar muscle injury caused by aseptic inflammation, which leads to lumbar soreness. Lumbar muscle strain is a common lumbar injury, this disease is mainly due to excessive weight bearing in the lumbar region, which leads to muscle, fascia, ligament and other soft tissue injuries, common such as sedentary, prolonged lumbar weight-bearing exercise, standing for a long time, inappropriate lifting of heavy loads and so on, which causes localized chronic aseptic inflammation. Patients may experience recurrent lumbar pain, and the symptoms of lumbar pain can be relieved after resting for a period of time. Patients can relieve the symptoms by applying hot compresses and appropriate lumbar exercises. Functional exercises to strengthen the lumbar back muscles can also be carried out under the guidance of the doctor. If the pain cannot be relieved, non-steroidal anti-inflammatory drugs such as diclofenac diethylamide emulsion can be used as prescribed by the doctor to reduce the inflammatory response and relieve the pain.