Abstract: Pound-Drever-Hall(PDH) stabilization involves both optics and electrics parts, and it is difficult to simulate PDH method synthetically. This article is aimed at solving this problem. Firstly, the electrical part of PDH was designed. Then, the model of electric circuit was used to form the optical device after-analyzing the operation principle. Based on these, independent tests of devices and a synthetic simulation were successfully carried out. The Fabry-Prot cavity (F-P cavity) used in simulation has a length of 15cm with a mirror reflectivity of 0.97. The simulation results prove that the model of the device is reasonable. The system outputs a small zero-drift signal while the frequency shift is zero. At the frequency shift of 5MHz, 10MHz and 15MHz, the system has satisfactory outputs respectively. Some discussion on synthetic simulation result and proposals for improvement are given.