1. An image target tracking method, comprising: determining a relative position between a target and a camouflage interference in an image; generating a prediction trajectory according to the relative position between the target and the camouflage interference in the image; and correlating an observation sample position with the prediction trajectory to generate a correlation result, and determining whether the target is blocked and tracking the target according to the correlation result, wherein the step of correlating the observation sample position with the prediction trajectory to generate the correlation result, and determining whether the target is blocked and tracking the target according to the correlation result comprises: acquiring the observation sample position in real time, and correlating the observation sample position with the prediction trajectory; and if a first correlation coefficient between the observation sample position and the target is greater than a second correlation coefficient between the observation sample position and the camouflage interference, determining that the target is not blocked and confirming that the target is tracked; otherwise, determining that the target is blocked.