Bombay blood type is the rarest blood group known all over the world. The worldwide incidence of Bombay Blood group is one in every 250000 worldwide [1]. On red blood cells of these people there was absence of A, B and H antigens and also the anti-H antibodies were present in plasma. There is a probability that he anti-H antibodies in the maternal blood may lead to hemolytic disease in newborn and may trigger severe transfusion reaction specially hemolysis when exposed to any blood type other than Bombay blood group. Bombay blood group in pregnant is a rare entity. We report a case of Bombay blood group with anemia with preeclampsia with previous caesarean section managed intensively to give a healthy mother and baby. The biggest task is arranging blood for transfusion because the Bombay blood group is not available easily.