Those women underwent removal of splenic artery aneurysm. One of them was admitted because of intraperitoneal bleeding. Further examination showed rupture of a splenic artery aneurysm with the delayed rupture phenomenon. Emergency laparotomy was perfomed. Splenic aneurysmectomy and splenectomy were successfully carried out. The two other cases of splenic artery aneurysm were detected accidentally. One was complicated by aortic abdominal aneurysm and the other by cholelithiasis. Each patient received two different types of operations at the same time. Splenic aneurysm is likely to be overlooked because of lack of symptoms. However, even a small aneurysm has the possibility of rupture. Therefore, an early operation is recommended.