Based on characteristics analysis of LM AUV long-distance mine delivery,mine position dispersion mainly includes the platform positioning error,navigation error and mine terminal trajectory error,when using AUV to conduct long-distance mine delivery. Then,the corresponding probability function is constructed,and the mine potential dispersion model is established. Finally,the influence of factors such as current velocity,depth and voyage on mine position dispersion of AUV long-distance delivered mines is studied by MATLAB simulation.