A zoom/focus apparatus, comprising: a first focus lens barrel in which a first focus lens group which needs to be moved is installed, wherein the first focus lens barrel is radially unmovable; a first zoom lens barrel in which a first zoom lens group which needs to be moved is installed, wherein the first zoom lens barrel is radially unmovable, has larger caliber than the first focus lens barrel, and is disposed coaxially with the first focus lens barrel, and wherein the first focus lens barrel is sleeved inside the first zoom lens barrel; a first ultrasonic motor, a rotation axis of a rotor of which is coaxial with the first focus lens barrel, wherein the rotor of the first ultrasonic motor is used to drive the first focus lens barrel to move axially; and a second ultrasonic motor, a rotation axis of a rotor of which is coaxial with the first focus lens barrel, wherein the rotor of the second ultrasonic motor is used to drive the first zoom barrel to move axially; characterized in that a stator of the first ultrasonic motor is a first fixation barrel, an inner surface of a wall of the rotor of the first ultrasonic motor is a polyhedron each side of which is attached with a piezoelectric element, and an outer surface of the wall of the rotor of the first ultrasonic motor is fitted with an inner surface of a wall of the first fixation barrel by threads or friction; and a stator of the second ultrasonic motor is the first fixation barrel, an outer surface of a wall of the rotor of the second ultrasonic motor is a polyhedron each side of which is attached with a piezoelectric element, and an inner surface of the wall of the rotor of the second ultrasonic motor is fitted with an outer surface of the wall of the first fixation barrel by threads or friction. a first focus lens barrel in which a first focus lens group which needs to be moved is installed, wherein the first focus lens barrel is radially unmovable; a first zoom lens barrel in which a first zoom lens group which needs to be moved is installed, wherein the first zoom lens barrel is radially unmovable, has larger caliber than the first focus lens barrel, and is disposed coaxially with the first focus lens barrel, and wherein the first focus lens barrel is sleeved inside the first zoom lens barrel; a first ultrasonic motor, a rotation axis of a rotor of which is coaxial with the first focus lens barrel, wherein the rotor of the first ultrasonic motor is used to drive the first focus lens barrel to move axially; and a second ultrasonic motor, a rotation axis of a rotor of which is coaxial with the first focus lens barrel, wherein the rotor of the second ultrasonic motor is used to drive the first zoom barrel to move axially; characterized in that a stator of the first ultrasonic motor is a first fixation barrel, an inner surface of a wall of the rotor of the first ultrasonic motor is a polyhedron each side of which is attached with a piezoelectric element, and an outer surface of the wall of the rotor of the first ultrasonic motor is fitted with an inner surface of a wall of the first fixation barrel by threads or friction; and a stator of the second ultrasonic motor is the first fixation barrel, an outer surface of a wall of the rotor of the second ultrasonic motor is a polyhedron each side of which is attached with a piezoelectric element, and an inner surface of the wall of the rotor of the second ultrasonic motor is fitted with an outer surface of the wall of the first fixation barrel by threads or friction.