For fast finding out submarine location, research on anti–submarine plane based on magnetic finder responding search model. According to the characteristic of responding-antisubmarine, combine with the magnetic finder searching method and analyze the submarine maneuver model and anti-submarine patrol plane track model under responding search condition. Establish efficiency model of magnetic finder responding search and carry out simulation calculation. Based on this, analyze the influence of responding distance, submarine navigation speed, magnetic finder operation range, plane flight height, and submarine navigation direction on detection probability. It has some reference for efficiency research of magnetic finder responding search.