Abstract: 【Summary】 Transcatheter aortic valve implantation (TAVI) is a new technology, which is the interventional treatment for symptomatic aortic stenosis. After more than ten years of development, results and interim survival of TAVI are equivalent to surgical treatment. With the improvement of delivery devices and valves, TAVI indications has expanded, safety and efficacy have been improved. This article will introduce the different approaches for TAVI.