The invention discloses a layered model predictive control (MPC)-based wind power reactive voltage synergic control system. The layered MPC-based wind power reactive voltage synergic control system comprises an adaptive adjustment layer, a reactive power allocation layer and a real-time control layer, wherein the an adaptive adjustment strategy of a grid-connected voltage is proposed by the adaptive adjustment layer according to adjustment capability of a wind power plant and fluctuation track predication of the grid-connected point voltage, an improved proportion allocation strategy capable of considering reactive power adjustment margin of each machine set is given out by the reactive power allocation layer on the basis of solving reactive power demand capacity, and a control error is corrected in real time by the real-time control layer according to state prediction and reference and feedback information. By layered MPC, predication information of different time levels in each layercan be effectively utilized, control on different time scales of each layer can be effectively coordinated, and the effectiveness of the proposed method is verified by a PSCAD-based simulation analysis result.