To Solve the problem that the ship position of an autonomous underwater vehicle (AUV) will shift in different degrees in different ocean current environments, a model of AUV motion in ocean current environment is established, and based on the evaluation index of ship position distance shift and ship position azimuth shift in ocean current area, the model of AUV motion in current environment is established. The influence of ocean current environment on AUV sailing deviation is analyzed. The results show that when the current direction or velocity reaches a certain value, the influence on the distance and azimuth deviation of AUV navigation increases sharply. Compared with the current direction, the current velocity has a more direct influence on the position deviation of AUV navigation; different directions and sizes of currents will have a consistent influence on the position deviation of AUVs navigation under certain circumstances; By setting the threshold of AUV position shift, it can provide auxiliary decision-making for AUV route planning, avoid the sea area with the corresponding current threshold, and improve the ability of AUV to deliver weapons, equipment and materials remotely and accurately.