The invention discloses track traffic automatic fare collection system reader-writer middleware. According to the thought of developing the reader-writer middleware in a layered mode, an independent dynamic function layer of hardware and an operating system is sealed between a hardware layer and an application layer to shield differences among interfaces of different hardware, and compatibility of different bottom devices of application program of an existing reader-writer is achieved. Specific call of functions is achieved through conducting dynamic loading on a dynamic function library in the whole software system, and the function of equipment management is completed. By means of the track traffic automatic fare collection system reader-writer middleware, the reader-writer middleware is adopted to provide universal services between platforms such as the hardware and the operating system and the application, the redundancy of data is reduced, different business requirements of an upper-level system for the data are met through complex event processing, and the defect that when the terminal reader-writer changes every time, upgrading and development of the hardware and the operating system are needed for another time is overcome.