Behcet's disease generally does not affect life expectancy. Behcet's disease is a systemic immune system disease and belongs to vasculitis. It can invade many organs of human body, mainly manifested as repeated oral and perineal ulcers, rashes, erythema of lower limbs, ocular iritis, esophageal ulcers, small intestine or colon ulcers and joint swelling and pain. The diagnostic criteria of Behcet's disease are: on the basis of recurrent oral ulcer, add any of the following two items, namely recurrent genital ulcer, skin lesion, eye involvement and positive acupuncture reaction. There is no recognized effective radical cure for Behcet's disease; Many drugs are effective, but most of them are easy to relapse after stopping taking drugs. The purpose of treatment is to control symptoms, prevent and treat the damage of important organs, and slow down the progress of the disease. This syndrome usually goes through a chronic process, and the remission and recurrence can last for weeks or years or even decades. Because it involves the central nervous system, cardiovascular system and gastrointestinal tract, it can even lead to death. If the condition is repeated and multiple systems are damaged, seek medical advice in time and cooperate with the doctor.