Abstract: This paper introduces the design and application of muscular current telemetry system for atheletes(MCTSA),in which PAM-FM has been used.Picking up the currents from 8 to 12 muscles and one of joint angles,the system can monitor the physical conditions of an athelete who is at a distance of 100M away.Being able toperform real-time monitoring and recording,the instrument is quite useful for athletic physiological and biomechanic study.Besides,it can be used as an industrial ormedical instrument in the measurement of 8 to 12 signals of several to 500 Hz.The device is portable and has a low power consumption.