In ultra-precision cutting, grinding and special processing, it is difficult to resolve the conflict between the large stroke and high-precision feed, which is also a headache for multi-axis ultra-precision machining. In order to construct a low-speed micro-electron discharge machining system adaptable to a wide range of micro-methods and driven by ultrasonic motors (USM), the program attempts to design the base platform for precision Motion Platform. By analyzing the dynamic and the static properties for the platform with ANSYS software and comparing the designs of platforms, the design of the base motion platform has been completed. After testing the performance of the platform, the design has met the requirements. The research can be treated as a universal solution in the design of the base platform for high-precise motion areas.