Abstract: A method, for detecting a position change of a lane marker, includes: determining, based on a first measurement data of a distance between the lane marker and a reference marker on a road that is obtained from a first road data collected via a high-precision device at a first time point, a first set of changed regions between the lane marker and the reference marker in which the distance has changed; determining a second set of changed regions between the lane marker and the reference marker in which the distance has changed based on a second measurement data of the distance that is obtained from a second road data collected via a low-precision device at a second time point after the first time point; and detecting the position change of the lane marker between the first time point and the second time point.