With the maturity and development of the micro grid technology, it should be widely used in practice, and it becomes more and more crucial that micro grid should cooperate friendly with the power grid. Consequently, we put forward a new micro grid running control method based on ADRC, which realized the cooperation with stability and smoothness under the several running states, such as grid-connected mode to island mode, island mode to grid-connected mode, and load disturbance changing mode. Some simulation...