The invention provides a method for detecting the parameters of a double-fed wind generating set. The method includes the steps that first, the double-fed wind generating set is connected into a power grid for generating electricity, and a voltage signal and a current signal of the double-fed wind generating set are collected through wave recording equipment; second, a master controller of the wind generating set is used for collecting the wind direction, the wind speed, the pitch angle, the generator speed, the generator torque and a master control low voltage ride-through signal; a converter controller is used for collecting a converter low voltage ride-through signal, a converter Chopper actuating signal and a converter Crowbar actuating signal; third, the equivalent parameter and the low voltage ride-through response delay time of a double-fed wind generator are acquired according to the current signal and the voltage signal. Compared with the prior art, by means of the method for detecting the parameters of the double-fed wind generating set, errors caused by an experimental platform which is composed of parts of devices are avoided, the reciprocal influence of the double-fed wind generating set and the power grid can be reflected, and the detection method is high in operability, simple and practical.