A multi-period dynamic power supply recovery strategy for active power distribution is proposed. This is to tackle the problem that the traditional power recovery strategy based on a single-time section finds it difficult to maintain the stable operation of electrical islands for a long time during load recovery. The efficiency of grid reconstruction and the stability of load operation during recovery are improved by introducing controllable loads. In addition, a heuristic island dynamic adjustment algorithm is proposed for the problem that the active distribution network load dynamic recovery model has too many variables and is difficult to solve. Simulation results verify the feasibility and superiority of the proposed strategy. This work is supported by Key Program of National Natural Science Foundation of China (No. 51537003).