Firstly, ankylosing spondylitis is a chronic disease that primarily affects the axial joints, and this disease is incurable. It can only be managed with medications to control the progression of the disease, delay the appearance of joint deformities, and reduce disability. This is the main purpose of its treatment. The cause of the disease is also unclear, and it is somewhat related to genetics. If parents have it, the incidence in their children is significantly increased, and there is a phenomenon of familial aggregation. It cannot be considered a hereditary disease, but there is indeed a phenomenon of familial aggregation. Moreover, the incidence of the disease in children is much higher than in families without a history of the disease.