To reduce the influence of ship shake disturbance on tracking and pointing accuracy of ship borne antenna servo system, LADRC is used to modify the position loop of servo system. Firstly, the antenna servo system model is briefly analyzed and the state space equation is established. Then the system is improved by using LADRC, and its parameter design is introduced in detail. At the same time, in order to improve the dynamic tracking performance of the system, TD differentiator is used to extract the target velocity information for feedforward compensation. Finally, it is verified by experimental tests that compared with the traditional PID controller, LADRC can keep the dynamic performance of the antenna servo system from declining, and effectively provide its anti-ship shaking disturbance performance.