The embodiment of the invention provides an electric power marketing service application system, which is characterized in that a micro-application is predefined, wherein the micro-application comprises at least one micro-service, and the micro-service represents an electric power marketing service function implementation unit. The electric power marketing service application system comprises an access module, an application module, a service module, a data module and a basic resource module. The electric power marketing service of each function is defined into a micro-service, and then a plurality of micro-services form a micro-application, wherein the micro-services are identical in data interface mode, so that corresponding data of a certain micro-application can be acquired through calling data of the micro-services contained by the micro-application. The scheme unifies the minimum implementation unit of the electric power marketing service application system, enables data interfaces to be consistent and avoids a problem that the same data is inconsistent in different electric power marketing systems. The expandability of the electric power marketing system is improved.