Axial flow pump has been the hot point of the research field of circulatory support. This article has outlined the basic principle of its design and the methodology of its experimental study, and explained that excellent engineer design, avoiding turbulence, cavitation and wake, and reducing the destroy of red blood cells were the goal to get in design process. The computer-supported design and virtual experiment offered the high efficient tool for the above design. The axial pump has a broad scope in future clinical application.