Tester device is in order to be able to micro-switches the dynamic characteristics of the test platform, and then switch to improve performance, guarantee its quality, raise labor productivity, as well as modern detection techniques basic requirements. Detector design based on the theory that, on the basis of the detector structure and design experience and the work principle that the electrical work as the power source, its spindle rotary dynamic drive pulley, cylindrical guide into reciprocating linear motion. and at the same time produce a force, transmission sensors, recorded by the sensor. Tester of the kinetic parameters for analysis, the tester device structure and technical parameters, which gives a micro-switch tester dynamic characteristics of the bulk structure design. According to the test instrument design case will, of fretting Switch Tester dynamic characteristics of structural design, Fretting expounded jump flexible switching dynamic characteristics tester principle of the structure. This paper mainly discusses the tester testing process, including its main tester of the main structural components and equipment, Detection Switch jump flexibility and displacement sensor characteristics. Through the design of equipment to further enhance the performance of the equipment to ensure the quality of their work, this is also a modern detection techniques basic requirements.