An ultrasonic therapeutic means and an ultrasonic therapeutic system, including the ultrasonic therapeutic means and led by an image device, the ultrasonic therapeutic means includes an ultrasonic therapeutic head(5) which comprises an ultrasonic transducer, a box(3) which contains the ultrasonic therapeutic head(5) and the couplant liquid, a moving unit(1) which drills through the wall of the box and connects the ultrasonic therapeutic head(5), and a compensating unit(2,6) which sets on the box(3) and holds the altitude of the liquid when the moving unit(1) made the ultrasonic therapeutic head(5) moving. The compensating unit(2,6) are set on both sides of the box(3) and incorporates with the box(1), the moving unit(1) drills through both of the compensating unit(2,6). An ultrasonic therapeutic system, includes the said ultrasonic therapeutic means and leads by an image device. The ultrasonic therapeutic system according to present invention eliminates the phenomena of the changing of the couplant liquid, caused by the moving of the ultrasonic therapeutic head(5) moves by the moving unit(1)in the prior art, keeps the stabilization of the liquid in the box, consequently decreases the interference of images result by the changing of the couplant liquid, and increases the precisionof the image device.