Code for Pile Foundation of Harbor Engineering (JTS 167-4—2012) was published on July 18th,2012 and has been put into effort since September 1st, 2012. This paper introduces the background and basis of the main revision and supplement about the technical details of this code to facilitate the engineers to understand and practice the standards. Meanwhile, it is better for the users to accumulate experience and do research on the relative problems, creating condition for the further perfection of the code as well.