Patients feel tight and uncomfortable in the back, the common causes are mainly the following: a. Lumbar muscle strain is mostly seen in patients who have been engaged in heavy labor for a long time, as the muscles of the lower back are stretched, which can cause chronic injury to the muscle fibers, and the tightness, swelling and painful discomfort of the lower back. Patients need adequate rest, low back massage, physiotherapy, gua sha, acupuncture, to improve local blood circulation, which can relieve the swelling and pain discomfort of the low back. Secondly, patients with lumbar disc herniation can suffer from muscle tension, numbness, swelling and pain in the lower back due to the extrusion of the dural sac. The above symptoms can be improved by means of lower limb traction and massage physiotherapy. For patients with stubborn symptoms, it is necessary to improve the magnetic resonance imaging of the lumbar spine to clarify the situation of lumbar disc compression, and if necessary, perform surgery to release the disc compression symptoms, so as to completely solve the tightness and discomfort of the low back.