To solve the problem of trajectory tracking for loitering munition at constant height, a trajectory tracking approach based on navigation coordinates for loitering munition was put forward.Based on navigation coordinate, omitting azimuth deviation control, two different control strategies were applied to correct lateral deviation in order to ensure the loitering munition flying along ideal trajectory after the whole trajectory was divided into straight line stage and wheeling stage.The simulation result shows that the approach can make sure that during munition flying, the error of deviation from ideal track is quite small and the tacking effect is good.