The invention provides a power utilization information collection method and a system based on a technology of a Beidou satellite navigation system. The technical scheme comprises the following steps of: obtaining a meter reading data message of collected power utilization information, also generating a Beidou communication message by the data conversion of the meter reading data message and transmitting the Beidou communication message to a prepositive end by a Beidou communication link; and reducing the Beidou communication message to the original format of the meter reading data message by the prepositive end and also transmitting to an application server of a central master station for carrying out united managing and monitoring. By adopting the method and the system which are provided by the invention, the power utilization information of residents in a site can be connected to a master station of a power utilization information management system in a seamless way by utilizing the two-way communication function of a Beidou satellite navigation system under the condition that traditional operation equipment is not reconstructed so as to realize the process from the collection of data in the site to the connection of a Beidou communication channel. The power utilization information of regions with undeveloped communication can be effectively and reliably obtained at real time.