Softfox X-ray Source Simulator (SFXRSS) can replace the real X-ray source and provide RS232 serial communication of COM port for the development and debugging of software using X-rays, so as to realize the setting of X-ray source parameters, control of X-ray source and acquisition of information on the working status of X-ray source, break through the various restrictions of directly connecting to X-ray source to develop and debug programs, and greatly improve the efficiency of software development using X-ray sources.