The invention provides a method and device for collecting power consumer information. The method comprises the steps that a power consumer information collection system master station sends communication establishment commands consistent with a format of a set Internet communication protocol to a center node on a concentrator according to the format of a power consumer information collection system communication protocol; and the center node generates subnode addresses consistent with the format of the set Internet communication protocol according to ammeter addresses in the communication establishment commands and issues the subnode addresses to subnodes on ammeters corresponding to the ammeter addresses, wherein the subnode addresses are used for collecting the power consumer information of the ammeters according to the set Internet communication protocol. According to the method and the device, under the condition of not changing the original corporation standard protocol of the State Grid Corporation of China, the power consumer information is collected by utilization of the Internet communication protocol.