The invention relates to the technical field of railway engineering and discloses an ultrahigh optimization method and equipment of a railway curve. The method comprises the following steps: acquiring railway vehicle system parameters and line parameters of a line section; according to the railway vehicle system parameters, the line parameters and a railway vehicle-rail system dynamic simulation model, calculating a corresponding relation between a railway curve ultrahigh value in the line section and a dynamic performance of a train; adjusting the ultrahigh value according to a corresponding relation between the railway curve ultrahigh value and the dynamic performance of the train, and railway line standards. With the adoption of the ultrahigh optimization method disclosed by the invention, the ultrahigh value is effectively and reasonably optimized according to conditions of the actual line train, and damages to the line section of the railway curve are effectively reduced, so that potential safety hazards, caused by the fact that the ultrahigh value is not reasonably set, are avoided, and the safety of the railway operation is greatly improved.