A multimedia middleware apparatus using metadata, a control method and a storage medium are provided which can receive metadata in multimedia middleware provided in a terminal, easily add/delete/change a service, and effectively maintain and manage middleware components. When an open multimedia terminal processes multimedia contents, a multimedia middleware service structure for expressing information of a name, configuration, version and application programming interface (API) update is configured in the form of metadata. Lists of standard and non-standard services of multimedia middleware are then generated and managed.