The invention relates to a mass communication terminal connection management method of an electricity information acquisition system and belongs to the technical field of the electricity information acquisition system. The method includes that multithreaded classification management of an intelligent terminal is adopted, unregistered thread server management threads are led in, invalid Socket is screened through the unregistered thread server management threads, and system resources utilization rate is increased; the Socket registered successfully is assigned to the corresponding management threads according to terminal types analyzed in a received message, the invalid Socket is detected through the classification management threads and removed, and terminal connection management is realized. With the method, the problem about 'bottleneck' of accessing of an existing electricity information acquisition system is solved; the method for Socket management is improved, access capability of a front-end processor module is improved, thereby more suitable for access of a mass intelligent terminal under the condition of further IPv6-address application.