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This invention discloses a method for optimizing the neutral rate in an MA-assisted RSMA-RIS system. The method first presents an algorithm for updating the position of the movable antenna (MA), and then provides an algorithm for obtaining the optimal system neutral rate based on AO iteration. This invention can solve the problems of precoding design, antenna position, RIS reflection matrix design, and common rate partitioning scheme design in MA-assisted multi-user downlink RSMA-RIS systems. It obtains the optimal solution for the system neutral rate through iteration and can quickly converge to the optimal solution.