When ship works at sea, the stable platform is needed to compensate the swing of ship. In the working process of the stabilized platform, control algorithm is needed to control each channel. Due to the influence of inertia about the hydraulic cylinder and the electro-hydraulic servo valve mechanical components, the system responded with a lag when using the conventional Proportion Integral Derivative (PID) algorithm, so the compensation precision of the stabilized platform is reduced. Therefor, a feedforward PID control algorithm is proposed. The algorithm not only had the advantages of conventional PID algorithm such as easy to operate, but also could solve the problem of system response lag. Based on single channel of the stable platform as a research object, the method of the combination of simulation and experiment is adopted to prove the validity of feedforward PID control algorithm.