This paper describes the principle and clinical significance of extracorporeal circulation, briefly introduces the principles and characteristics of the blood pump for extracorporeal circulation, and the key technical evaluation indexes of the blood pump. The paper focuses on the development history of centrifugal blood pump, the working principle and features of the second-generation, the third-generation magnetic drive blood pump. The second-generation blood pump uses disc-shaped magnetic coupler whose permanent magnet adopts the structure of push-pull combination. The third-generation blood pump based on the second one is added the suspension system,   including electromagnetic levitation and permanent magnetic levitation at present. Finally this paper prospects for the development trend of the centrifugal blood pump for extracorporeal circulation.