The invention discloses a converter control method applied to a voltage source type converter. The alternating current side of the voltage source type converter is connected with an alternating current system through a converter transformer; and closed loop current control of the converter is realized by collecting a grid-side voltage and a valve-side current. By adoption of the control method provided by the invention, the problems of grid-side sleeve CT saturation of the converter transformer and caused out of control can be avoided, without needing to add new measurement equipment, therebyachieving relatively high economic efficiency.