An offshore platform includes a platform body and a plurality of buoys, characterized by, the buoys are arranged in an array, An upper part of that buoy is connecte by a connecting body, A platform main body is arranged above the connecting body, an adjusting device is arranged between the connecting body and the platform main body, the adjusting device can adjust the distance between the connecting body and the platform main body, a steel pipe pile is arranged at the float center around the platform main body, the steel pipe pile is inserted into the seabed for fixing, and the float is movably connected with the steel pipe pile. Through the combination and innovation of platform main body, buoy, steel pipe pile and buoyancy adjustment method, a kind of offshore platform with simple structure, stable performance, good anti-wind wave performance and safety performance, convenient fabrication and installation, and low energy consumption is provided.