By establishing the model of the submarine, and the models of the fixed-wing anti-submarine aircraft and of its typical flight route for deploying the encirclement arrays, simulation modeling is implemented for the submarine escaping and sonobuoy array deploying in anti-submarine combat. By using the simulation result, the influence of the anti-submarine distance, the submarine speed, and the type of sonobuoy array on the submarine searching efficiency is studied. Based on the analysis to the probability distribution of each escape direction of the submarine in the case of searching failure under high search probability condition, the directional characteristics of different anti-submarine sonobuoy array are obtained.