The invention provides a joint control method and system for solving the high voltage ride-through of a wind turbine. The method comprises a step of monitoring the port voltage of the wind turbine inreal time, and a step of quickly controlling a static var generator (SVG) of a low voltage side of a main transformer of a wind farm, a low voltage reactor system and a wind turbine converter according to the port voltage of the wind turbine to suppress the high voltage of the wind turbine port. According to a technical solution for large-scale wind turbine trip-off caused by the voltage swells ofthe wind turbine port caused by a power grid disturbance fault provided by the invention, the port voltage of the wind turbine can be effectively reduced in the grid disturbance accident process, andthe large-area trip-off of the wind farm is prevented.