本文介绍２例缓慢起病的血栓性血小板减少性紫癜（ＴＴＰ），其临床表现与一般ＴＴＰ有所不同。疾病初起呈缓慢隐袭，在典型症状“三联征”或“五联征”出现之前，反复皮肤、粘膜紫癜或阴道流血不止分别长达３个月和１个月。较一般ＴＴＰ而言，预后要好。本文并有讨论及其诊治方法。 This article describes two cases of slow onset thrombotic thrombocytopenic purpura (TTP), its clinical manifestations and general TTP are different. The disease was slowly insidious early insult, in the typical symptoms “triple sign” or “five levy sign” before the repeated skin, mucosal purpura or vaginal bleeding more than for up to 3 months and 1 month. Compared with the general TTP, the prognosis is better. This article also discussed and diagnosis and treatment methods.