The invention relates to the field of Internet of Things, and provides an electricity charge collection method based on the composite Internet of Things and an Internet of Things system. The Internetof Things system comprises a user platform, a plurality of service sub-platforms, a plurality of management sub-platforms, a sensor network platform and a plurality of object sub-platforms. Power dataare sent to the management sub-platforms by an electric meter itself at the preset time, and the management sub-platforms make a statistic of the power data of a plurality of electric meters of one housing estate or district, after that, compare the total amount of the power data of the district with a power consumption index provided by a government service platform to the management sub-platforms, formulate a charging scheme and generate the total electricity charge of the district, and then the user platform can complete the payment through a recharge platform. According to the electricitycharge collection method based on the composite Internet of Things and the Internet of Things system provided by the invention, by automatically making a statistic of the total amount of the power data of one housing estate or district and charging based on the power consumption index by amount, one housing estate or district can be well urged to save electricity, and by managing the user platform of one housing estate or district, the policies of saving electricity and so on can be implemented well.