The invention discloses a tree topology network recovery method based on self organizing classification management, mainly used for solving the problem in the prior art that the network can not be recovered quickly when a power failure fault occurs or after restarting in the tree topology network. The tree topology network recovery method based on self organizing classification management comprises the following steps: the central node and all relay nodes initiate the network recovery independently to complete the network recovery between a node and a child node; when a slave node receives a recovery command from a superior node that the slave node is subject to, the slave node reports the network recovery information of the slave node and all the nodes that is subject to the slave node; and the final relay node performs summary and report on the network recovery information from the bottom to the top until reaching the center node and completing the network recovery. According to the tree topology network recovery method based on self organizing classification management, the original network can be recovered quickly by means of the historical network information stored in the network device, therefore, the efficiency of network recovery is improved, and the tree topology network recovery method based on self organizing classification management can be used in the field of local area networks and access networks of all kinds of communication.