Abstract: Jacket slip pile might bring significant risk to the offshore construction, and make people worrying about the loading capability of piles after operation of platform. In order to ensure safety during operation of platform, by evaluation on the loading capacity of a jacket slide pile after pile in East China Sea as an example, a post evaluation method on the loading capacity of pile supported jacket has been put forward according to the actual piling conditions, which can provide reference for similar future post evaluation on the loading capacity of pile slip during piling process.