The dynamic characteristics of aero-engine blades is related to the safe operation of aero-engines and even the entire aircraft. Therefore， it is one of effective means of ensuring security to conduct online dynamic parameters testing of rotating blades. Aiming at such special research object of rotating blades， in this paper， non-contact magnetic excitation is proposed as the exciting force for rotating blades， and WIFI wireless transmission is used to realize the online vibration signals measurement and transmis sion. On this basis， a dynamic parameters measurement system of non-contact magnetic excitation-wireless transmission is designed to measure dynamic parameters of rotating blades， and the corresponding verification tests show that the system is convenient to useand has high measurement accuracy， which indicates its high engineering application value.