The invention relates to an IPv6 micro-power wireless communication method. The method comprises the steps of (1) starting micro-power wireless automatic networking according to a configuration instruction of a main meter reading module of a concentrator, and sending a meter reading instruction; (2) determining the quantity of target IP addresses; (3) finding out target routes of the plurality of target IP addresses, creating a multi-cast meter reading downlink instruction frame of one network layer, and distributing; (4) receiving the downlink multi-case meter reading instruction through a terminal module sending the instruction application, and determining whether the multicast downlink instruction frame is processed; (5) comparing the target IP addresses in the downlink instruction frame with the target IP address through a micro-power wireless communication module, and determining whether to send a multi-cast meter reading stopping instruction; (6) determining whether an energy meter response frame is received before exceeding the time; if so, performing the multi-cast meter reading uplink instruction, and sending the energy meter response data to the concentrator.