A clamping apparatus for an ultrasonic detection device is disclosed. A remote control device for remotely controlling a first motor to control a rotational position of a base. The remote control device for remotely controlling a second motor to control a moving position of a movable base relative to a first arc-shaped rack. The remote control device for remotely controlling a third motor to control a moving position of a second arc-shaped rack relative to the movable base, so as to achieve the technical effect of providing an accurate three-dimensional detection angle to the ultrasonic detection device.