With railroad speed rise quickly , railroad carrying capacity's enlarge year by year, railroad effect general got up in national economy life in our country is especially important ,under this background, the people had a higher request to the traffic safety, this also requests our country the railroad profession to the higher standard development.This article to domestic was shift-frequency parameter test method as well as the shift-frequency parameter reflectoscope reflector to conduct the thorough research, proposed one method was the PositionMachine System of Shift-frequency Parameter Test Instrument based on ARM9 , designed embedded system hardware platform based on SAMSUNG ARM9 the processor S3C2410, and, completed the Windows CE.net operating system transplant.On the hardware has Mainly completed the periphery circuit of S3C2410 research and the design work . Include the 3.3V,1.8V and 5V power supply module, serial port, network module, JTAG testing interface and the communication interface of DSP HPI.On software has completed the operating system Board Support Package (BSP) the design work,succeeds on the development board transplants the Windows CE.net operating system, and has developed on the position machine customer end application program.This system has used the embedded system fully real-time operational good, the intellectualized degree high characteristic, realized has been shifted parameter real-time gathering, the analysis, the memory