Chronic lumbar muscle strain belongs to one kind of lumbar muscle strain, which is a kind of cumulative injury. Mainly because of the lumbar muscle fatigue, resulting in lumbar muscles, fascia and ligaments persistent pulling, etc., so that the increase in intramuscular pressure caused by the obstruction of blood supply, the muscle fibers in the contraction of the energy consumed can not be timely replenishment, the local production of excessive accumulation of lactic acid, inhibit the normal metabolism of the lumbar region. These products can not be removed in time, triggering inflammation, adhesions, and so on repeatedly, leading to tissue degeneration, causing chronic low back pain. Patients may experience soreness or swelling. The frequency of pain is intermittent and recurrent, and if the condition is severe, it becomes persistent. It is recommended that patients with chronic lumbar strain go to the hospital for regular follow-up.