A telescopic apparatus comprises a first tube, a second tube, a movable member, and an actuator. The second tube is telescopically and movably coupled to the first tube. The movable member is movable relative to the first tube in a telescopic direction. The actuator is configured to be deformable so as to move the movable member relative to the first tube in the telescopic direction. The actuator is provided in at least one of the first tube and the second tube.