Autoimmune diseases are the collective name of a large group of diseases, which includes dozens of diseases, common autoimmune diseases, divided into three major categories: the first major category is the main manifestation of joint pain, such as rheumatoid arthritis and ankylosing spondylitis; second, connective tissue diseases represented by systemic lupus erythematosus and dry syndrome; third, systemic vasculitis with vascular involvement as the main manifestation. Autoimmune diseases often have complex clinical symptoms and can be easily missed or misdiagnosed, and many hospitals do not yet have a complete rheumatology department, so for the diagnosis and treatment of autoimmune diseases, patients must go to the rheumatology department of regular hospitals to receive systematic and scientific treatment.