Immunological diseases are diseases caused by structural and/or functional abnormalities of the immune system due to congenital or acquired factors. They mainly include the following: 1. primary immunodeficiency diseases: they are diseases caused by genetic mutations that cause defects in immune organs, tissues, cells or molecules, resulting in impaired immune function of the body; 2. immune problems during development and aging; 3. secondary immunodeficiency: temporary or persistent damage to the immune system caused by tumors, infections, drugs or physicochemical factors, etc., with a high incidence, which are acquired acquired; 4, allergic diseases: such as food allergy, drug allergy, insect toxin allergy, etc. Allergic rhinitis and allergic asthma can also be classified as immune diseases, but at the same time crossed with ENT and respiratory; 5, autoimmune diseases: refers to diseases in which the autoimmune response produces molecules that damage its own tissues and organs and cause corresponding dysfunction, the etiology is unknown and may be related to genetics, immune system The cause is unknown and may be related to genetics, immune system dysfunction, gender, endocrine and external environment. The therapeutic measures that can be taken according to the cause are: choosing to suppress the immune response, preventing infection, avoiding the use of certain drugs, etc. There are many different types of immune diseases, and the severity of the disease varies greatly, and the treatment varies.