The vibration caused by slot milling machine for cutting impacts angle sensor measuring re-sult.Primary vibration isolation cannot reduce the vibration in cutting process,so that we must carryon the secondary vibration isolation in order to reduce the influence of measurement of angle sensor.This paper analyzes the basic principle of vibration isolation;the vibration of the angle sensor will besimplified into single degree of freedom model.Aiming at the design of the sensor vibration isolator,the author analyzed the rubber vibration isolator design parameters.The rubber material and vibrationisolator structure design were studied.The results could provide design basis for sensor vibration isola-tion research and vibration isolator.