The invention relates to a dynamic whole machine modeling method for a double-feed asynchronous wind generating set. The dynamic whole machine modeling method comprises the following steps: acquiring structural parameters of a wind wheel in the wind generating set and lift drag pneumatic data of each blade section airfoil in the wind wheel; according to the structural parameters and the lift drag pneumatic data, establishing an aerodynamic submodel of the wind wheel according to a free vortex wake method; establishing a mechanical side submodel and an electrical side submodel of the wind generating set; establishing a data transmission channel between the mechanical side submodel and electrical side submodel; performing a coupling solution on a dynamic whole machine model through the data transmission channel, wherein the dynamic whole machine model comprises the mechanical side submodel and the electrical side submodel. By the dynamic whole machine modeling method, through high-accuracy modeling of a mechanical side and an electrical side of the wind generating set respectively and through the coupling solution of the dynamic whole machine model, a simulative analysis on interaction between the wind generating set and power grid disturbance is achieved.