Abstract: With the serious shortage and increasingly high price of oil resource,the exploitation of ocean recourses become more and more important and the requirement of offshore platform steels is increased.In this paper,the classification,application and production state of offshore platform steels are introduced.And the tendency of offshore platform steels,such as the increased requirement of strength from 355 MPa and 420 MPa to 500 MPa,the demands of large thickness,-60 ℃ low-temperature toughness and improved corrosion resistance in seawater,is pointed out.