The invention relates to a multi-network integrated intelligent power grid system, and belongs to the field of the construction of intelligent power grids. The multi-network integrated intelligent power grid system comprises a centralized reading module, a service center module, a payment module and the like; after receiving meter reading data of the centralized reading module, a master station module sends the meter reading data to a data analysis module; the meter reading data is subjected to temporary storage and analysis in the data analysis module, and a calculated result is sent to the service center module and a storage database; after collecting and screening the received information, the service center module transmits the collected and screened information to an information publish module for information publish; and after receiving the information, users can perform payment, set intelligent electricity-saving modes and the like. The function of intelligent electricity utilization is realized by the full integration of the conventional multiple networks.