A double closed-loop control method for active suppression of the displacement voltage of the neutral point in a distribution network belongs to the technical field of power system analysis, operationand power quality comprehensive treatment. The invention aims to provide a double closed-loop control method for active suppression of the displacement voltage of the neutral point in a distributionnetwork, which suppresses the rise of displacement voltage of the neutral point caused by the unbalanced parameters of the line to the ground and the switching-in of an arc suppression coil by controlling the way in which an active inverter device injects a current into the neural point. The invention provides a double closed-loop control method for active suppression of the displacement voltage of the neutral point in a 66kV distribution network. In the method, the rise of displacement voltage of the neutral point caused by the unbalanced parameters of the line to the ground and the switching-in of an arc suppression coil is suppressed by controlling the way in which an active inverter device injects a current into the neural point. The double closed-loop control adopts voltage outer loopPR control and current inner loop PI control. The voltage outer loop takes the neutral point voltage as the control objective, and the current inner loop takes the injected current as the control objective. Through real-time adjustment of the injected current, the accuracy and effectiveness of the injected current are guaranteed, and the displacement voltage of the neutral point is effectively suppressed.