Ankylosing spondylitis, also known as spondylitis (AS), is the Greek word for curved spine, and as the name implies, the disease mostly results in deformities of the spine. The age of patients with AS is 16-25 years old, with a male to female ratio of about 10.6:1. The disease is rare after the age of 30 and before the age of 8, and has a certain degree of family aggregation. The main manifestation of spondylitis becomes primary spondylitis, with reactive arthritis, psoriasis, etc. becomes secondary spondylitis, usually we say that the spondylitis is mainly referred to primary spondylitis. The cause of strong spondylitis is not clear, now recognized with genetics, infection and autoimmunity, and the primary site of the lesion is mostly in the attachment of ligaments and joint capsule, which is equivalent to the belt and gear connection parts, this place becomes straight, the activity is limited, so strong spondylitis is most common in the spine – – pain, stiffness, and the pain. -The most common symptoms of spondylitis are pain and stiffness in the spine, stiffness in the hip joint, and pain in the heart, eyes, and ears. Second, the clinical manifestations of strong spondylitis early manifestations of intermittent or alternating sides of the back pain and stiffness, sometimes accompanied by weakness, loss of appetite, wasting and hypothermia. The pain is intermittent at first, but later becomes persistent and without a history of trauma, and is not relieved by rest, but feels significantly less painful after activity. In late stages, deformation of the spine and changes in thoracic expansion occur, leading to respiratory distress and other symptoms, which is commonly referred to as stiffness wherever the lesion is located. Because most spondylitis lesions originate in the sacroiliac joints, most patients in the early stages experience lumbosacral stiffness and pain in the buttocks on both sides, which may radiate to the thighs without positive signs, and sometimes the pain shifts from one side to the other, with painful pressure. When spondylitis continues to progress and involves the lumbar spine, anterior and posterior lumbar motion and rotation are limited, and pain occurs with pressure. If the disease is not controlled in a timely manner, it may spread from the lumbar spine to the thoracic spine, resulting in restricted movement of the chest, especially difficulty in expanding the chest, and chest pain when inhaling, and the patient’s signs are more obvious at this time, even if it is difficult to bend over and touch his toes. If this time is not treated in time, the neck becomes stiff when the lesion goes up to the cervical spine from the bottom, and then the patient needs to turn his head to see what is behind him, which is very difficult! He needs to stop because he can’t move his back either and has to turn his body 180° to fully face what’s behind him – looking at the side requires a 90° rotation. And as the lesion progresses there is also fixation of the neck in forward flexion, thoracic kyphosis, thoracic fixation, lumbar kyphosis, and hip and knee flexion contractures. What’s more, it is difficult to open the mouth. Third, precautions 1, do not smoke, because the toxic components of smoke can aggravate the symptoms of autoimmunity, and can cause damage to the lungs. 2, pay attention to warmth in life, avoid contact with the damp and cold environment. 3, develop the habit of exercising every day, in principle, exercises that allow the joints to move, such as swimming, soft exercises, dance can be, which is conducive to the recovery of the disease, but also to maintain joint function, to prevent or reduce the occurrence of disability. Exercises that do not move the spine, such as bicycling, or sports that involve impact and contact, such as judo and basketball, should be avoided. As for jogging, it is discouraged because jogging may lead to inflammation of the soles of the feet or heel tendons, making it difficult to walk. 4, avoid weight bearing, because the patient’s weight-bearing ability is reduced, so should avoid strong weight bearing, which will aggravate the lesion. Avoid maintaining a posture for a long time (such as lying on the sofa to watch TV, or a long time on the Internet), and if you have to sit for a long time, get up at least every hour for ten minutes to move. Do not use a back restraint (will reduce the activity), so that the spondylitis worsens. 5, to maintain a good posture and sitting posture, daily and regular deep breathing, chest expansion, torso straightening and other movements and stretching exercises to strengthen the back muscles and abdominal flexibility are very important. These exercises can soften the stiffness, maintain joint extension and slow down the development of lesions. 6, try to sleep on a flat bed, avoid pillows, and keep the back upright. When you wake up in the morning with a stiff back, you can take a hot bath to improve, and hot compresses are also partially effective in relieving local pain.