The invention relates to a rapid docking platform and a building method thereof; the rapid docking platform comprises a steel hinge, a riffled plate, a profile steel, and protective barriers; the steel hinge is fixed on a movable platform base; the riffled plate is fixed with the steel hinge; the riffled plat is respectively integrally welded with the profile steel and the protective barriers. The building method comprises the following steps: (1) fixing one side of the steel hinge on the movable platform by means of embedding, welding or bolting; (2) determining lengths and width of the riffled plate and the profile steel based on the gap between the movable platform and the fixed platform as well as the sizes of the movable platform and the fixed platform, making the docking platform by means of welding; (3) respectively installing the protective barriers on the left and right sides of the docking platform; (4) fixing the docking platform with the other side of the steel hinge. The rapid docking platform enables to seamlessly dock two independent platforms, and avoids temporarily building a moving channel. The rapid docking platform is reasonable in design, simple and convenient in manufacturing. The rapid docking platform can be used as a standard and finalization configuration of docking platform; and the rapid docking platform can be reused, thereby reducing the cost; the rapid docking platform has a good application foreground.