The invention relates to a wind generating set combined simulation system communication interface realization method. The method comprises the following steps: (1) Bladed and MATLAB simulation time are set; (2) after Bladed stable state simulation is started, Bladed transient state simulation is started; (3) MATLAB simulation is started; (4) communication handshaking is performed; (5) data interaction is carried out; and (6) communication connection based on a UDP protocol between a mechanical model and an electrical model is broken off. According to the invention, through the establishment of UDP Socket communication, the wind generating set model established in a Bladed platform and the electrical model established in an MATLAB platform are unified, so that advantages of the two software are utilized, and simulation results are more close to operation results of a real wind generating set. Data transmission between the mechanical model and the electrical model employs the UDP network transmission protocol, so that the communication speed is fast; the real-time degree is higher; demands for system resources are less; demands for simulation speed can be satisfied; and the program is relatively simple in structure.