A lane center line determining method, comprising: obtaining, by a server (112, 1200, 1400), a target lane in a first road segment from a database, wherein the first road segment indicates a road segment having a changed lane number, the target lane indicates an added or subtracted lane, two side lane lines of the target lane are respectively connected to two side lane lines of a first lane at two endpoints of a first end of the target lane, the two side lane lines of the target lane intersect at an intersection point at a second end of the target lane and the intersection point is connected to a side lane line of a second lane; obtaining, by the server (112, 1200, 1400), related information of the target lane from the database, wherein the related information comprises: locations of the two endpoints of the first end of the target lane, a location of the intersection point at the second end of the target lane, and a location of a lane center point of a neighboring lane of the target lane; determining, by the server (112, 1200, 1400) for the first end of the target lane, a midpoint of the two endpoints of the first end of the target lane, as a center endpoint of the first end of the target lane; determining, by the server (112, 1200, 1400) for the second end of the target lane, the lane center point of the neighboring lane of the target lane as a center endpoint of the second end of the target lane, wherein the lane center point of the neighboring lane indicates a midpoint between the intersection point and a mapping point of the intersection point, the intersection point and the mapping point of the intersection point are respectively located on two side lane lines of the neighboring lane, and a connecting line between the intersection point and the mapping point of the intersection point is perpendicular to a travelling direction of the neighboring lane; determining, by the server (112, 1200, 1400), a lane center line of the target lane by using the center endpoint of the first end of the target lane and the center endpoint of the second end of the target lane as two endpoints of the lane center line of the target lane; and storing information of the two endpoints of the determined lane center line and the target lane in the database. obtaining, by a server (112, 1200, 1400), a target lane in a first road segment from a database, wherein the first road segment indicates a road segment having a changed lane number, the target lane indicates an added or subtracted lane, two side lane lines of the target lane are respectively connected to two side lane lines of a first lane at two endpoints of a first end of the target lane, the two side lane lines of the target lane intersect at an intersection point at a second end of the target lane and the intersection point is connected to a side lane line of a second lane; obtaining, by the server (112, 1200, 1400), related information of the target lane from the database, wherein the related information comprises: locations of the two endpoints of the first end of the target lane, a location of the intersection point at the second end of the target lane, and a location of a lane center point of a neighboring lane of the target lane; determining, by the server (112, 1200, 1400) for the first end of the target lane, a midpoint of the two endpoints of the first end of the target lane, as a center endpoint of the first end of the target lane; determining, by the server (112, 1200, 1400) for the second end of the target lane, the lane center point of the neighboring lane of the target lane as a center endpoint of the second end of the target lane, wherein the lane center point of the neighboring lane indicates a midpoint between the intersection point and a mapping point of the intersection point, the intersection point and the mapping point of the intersection point are respectively located on two side lane lines of the neighboring lane, and a connecting line between the intersection point and the mapping point of the intersection point is perpendicular to a travelling direction of the neighboring lane; determining, by the server (112, 1200, 1400), a lane center line of the target lane by using the center endpoint of the first end of the target lane and the center endpoint of the second end of the target lane as two endpoints of the lane center line of the target lane; and storing information of the two endpoints of the determined lane center line and the target lane in the database.