Abstract: The interactive influence between the integration of wind power and the swing and splitting of power grid has become increasingly prominent. Firstly, the equivalent single machine infinite bus model of wind thermal bundled system is built by using PSD BPA software, based on which the simulation and analysis on such aspects as the proportion of wind permeability and whether the wind farm should be equipped with reactive power compensation are carried out. And they are testified by combing practical power grid. Secondly, through changing the operation mode or the fault location, the corresponding capacity of off gird wind power is compared, and the effect of swing and splitting of power grid on the integration of wind power is analyzed. The results show that the larger integration scale of wind power the better reactive power compensation capability which is helpful for suppressing out of step oscillation of power grid, and improving the stability of power system. It is also can be seen that different power grid operation modes and fault locations can change oscillation mode of power grid, make the oscillation center migrate, and affect the integrating of wind power. Finally, optimized recommendations are given in view of studied interactive influence.