Systemic vasculitis is divided into large vasculitis, medium vasculitis and small vasculitis according to the caliber of the involved vessels. The conditions for pregnancy in patients with vasculitis are as follows: Xuemei Li, Department of Rheumatology and Immunology, Xuanwu Hospital, Capital Medical University Long-term stability of vasculitis (more than 1 year) No use of teratogenic drugs (cyclophosphamide discontinued for more than 6 months, AZA discontinued for more than 3 months, hormones less than 10 mg/day) Note: Pregnancy in large-vessel vasculitis has little effect, but in case of rupture of the uterus only epidural anesthesia can be used There is not much information on pregnancy with leukoaraiosis. However, if the large vessels are involved, epidural anesthesia can only be used for rupture of the uterus. Pregnancies with small vasculitis can recur or worsen at any stage of pregnancy, and the rate of adverse pregnancy increases, so pregnancy in patients with small vasculitis requires caution.