There are about seven types of the Gen-III pressurized nuclear power technology in the world. They are AP1000, EPR, CAP1400, APR1400, HPR1000, ABWR and VVER-1200. The paper describes the design features of the seven technologies, introduces the present construction situation of them and calculates the capacity under construction. There are eight reactors being constructed in China and America using AP1000 technology. Four reactors are being constructed using EPR technology in China, France and the Netherlands. The United Arab Emirates is constructing four reactors using APR1400 technology. One reactor adopting HPR1000 technology is being constructed in China, and one is not yet started. VVER technology gets a lot of orders in the world and is being constructed in many countries. The author hopes that the scholars will know the current development situation of Gen-III nuclear power technology better through this paper.