Dry syndrome is a rare autoimmune disease and is not contagious. Dry syndrome is divided into two kinds, primary dry syndrome and secondary dry syndrome, primary dry syndrome is generally caused by autoimmune system disorders, secondary dry syndrome is caused by some diseases, common rheumatoid arthritis, systemic lupus erythematosus and so on. Symptoms of dry syndrome are dry mouth, dry eyes, may also be accompanied by dental caries, with the development of the disease may also be damaged to various organs of the body, this disease will cause harm to the patients themselves, but will not be infected with other people. Patients with dry syndrome should consult a doctor in a timely manner and receive symptomatic treatment under the guidance of the doctor.