Résumé
Thrombocytopenia is hematologic disorder commonly occurs during pregnancy (5%) with different severity. It doesn't cause severe problem during pregnancy and after the delivery if it is not below certain level which will cause spontaneous bleeding. But in this case, patient was previous cesarean section status and platelet number didn't arise more than 20,000/microliter even after transfusion which will cause spontaneous bleeding. Vaginal delivery was done because transverse cesarean section was considered relatively safe although there was the risk of rupture of uterus, and was successful-both mother and baby is in good health condition. Here now we report this case because vaginal delivery of Immunologic thrombocytopenic purpuric woman with prior history of cesarean section has not reported.