The invention relates to the technical field of distributed power supply and micro-grid, and relates to a layered energy storage micro-grid comprising a plurality of energy storage units. The layered energy storage micro-grid is composed of a central control system, a centralized energy storage system, a micro-grid sub-grid control system, a micro-grid sub-grid and a switching device. A micro-grid system uses the combination of centralized energy storage and decentralized energy storage. Decentralized energy storage is used as a main micro source in the micro-grid. The centralized energy storage is used for power grid peak regulation and auxiliary services. In the case that the micro-grid sub-grid operates reliably and has no fault, the micro-grids of the sub-grid independently operates. The sub-grid control system monitors the state of micro-grid in real time, and uploads data to a centralized layer central control system. If a certain micro-grid sub-grid faces unstability or power imbalance, the centralized layer central control system, based on real-time data and control strategies, rationally deploys other micro-grid power supplies to be switched to the centralized energy storage to protect the micro-grid sub-grid to continue to operate. The layered energy storage micro-grid can improve the safe and reliable operation of micro-grid and reduces power consumption and hardware loss.