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Focusing on the difficulty of fee management and credit hour fee calculation in e-learning, this paper analyzes the specific charging service, and presents a design of intelligent e-learning charging system based on multi-layer architecture. It expounds the functions of each layer in the system and MVC model application. It describes the function module architecture in business service layer, and the intelligent arithmetic of credit hour fee calculation, and the common service interface design. The architecture has loose coupling, reusability, scalability and integrality which have been approved in real system.