In order to ensure the real-time data processing of remote device, a real-time processing system based on RTX is proposed, which is composed of RTX real-time process and man-machine interaction.The RTX real-time process gets data from remote device and processes the real-time data.Then, it displays and storages data by transferring the processed data to a Win32 user interface layer by sharing memory and synchronizing event object.Simultaneously, the user could alter remote device upon commands from man-machine interaction.Experiments have shown that the system can reduce the latency of data processing, ensure the real-time and stability of equipment control, and satisfy the real-time control requirements for remote device.