Hepatic Artery Pseudo Aneurysm (HAPA) is a rare disease in clinic, with complex etiology. In recent years iatrogenic causes of HAPA have increased. At present, Transcatheter Arterial Embolization (TAE) has gradually become the main method of rescue and treatment of HAPA. In this paper we report a patient with HAPA who accepted TAE, occurred serious ischemia and necrosis of spleen due to ectopic embolization, and splenic embolization eventually led to splenectomy. This paper reviews the literature on the diagnosis and treatment of HAPA published in the past decade, discusses and summarizes the key points of skills and the experiences of how to select of embolic materials of TAE, and summarizes the experiences of avoiding serious complications such as splenic necrosis splenectomy caused by the interventional operation.