An AT selector cover is disclosed having a base member having a select gate for an automatic mode and a manual mode gate formed along a vehicle's longitudinal direction, a first slide plate slidably held on the base member for sliding capability in the vehicle's longitudinal direction, and a second slide plate held on the first slide plate for sliding capability in a vehicle's lateral direction, wherein the second slide plate has a guide member protruding toward the base member, which has a guide recess for guiding the guide member, movable with the shift lever, which is inserted to the guide recess.