A conveyance device (100) comprises: a base member (81); a holding member (83) that moves along the base member (81); a motor (M) for advancing and retracting the holding member (83); a target (T) provided on the holding member (83); an optical distance sensor (86) positioned so as to face the target (T) when the holding member (83) is in the advanced position; and a control device (70). A processor (71) is configured such that: a basic rotation speed is applied to the motor (M) to advance the holding member (83); the actual distance from the optical distance sensor (86) to the advanced target (T) is measured by the optical distance sensor (86); a corrected distance for moving the holding member (83) to the advanced position is calculated on the basis of the measured actual distance; and the motor (M) moves the holding member (83) on the basis of the calculated corrected distance.