Abstract: The dynamic stability characteristics of Inner Mongolia power grid under the influence of different proportions of wind power connection are analyzed by the small disturbance and large disturbance stability analysis methods respectively, based on the 2-3 years rolling data issued by China Electric Power Research Institute and the 2023 forecast data. The analysis results show that the dynamic stability of the Inner Mongolia power grid is the worst when the wind power in Inner Mongolia is out of power; with the continuous improvement of wind power output level, the dynamic stability level of Inner Mongolia power grid has improved; large - scale wind turbines connected to the Inner Mongolia power grid can effectively improve the dynamic stability level of the power grid. This paper proposes methods to improve the dynamic stability characteristics.