The present invention relates to a cartridge for an ultrasonic probe including a pressure buffering device, and more particularly, to a cartridge for an ultrasonic probe including an operation part for generating ultrasonic waves and scanning ultrasonic waves on the surface of the object to be inspected A control unit coupled to an upper portion of the operation unit and including a circuit unit for controlling generation of ultrasonic waves And a housing part surrounding the operation part and the control part, wherein the operation part comprises: an ultrasonic transducer positioned inside the operation part to generate ultrasonic waves A transfer device which is located at the upper portion of the operation part and is coupled with the upper surface of the ultrasonic wave conversion device to move the ultrasonic wave conversion device And a pressure buffering device in the form of an open-topped air bag, which is positioned at a side of the transfer device and penetrates the lower part of the control part and the upper part of the operation part so as to function as a buffer against the internal pressure of the operation part, A transfer unit directly coupled to the ultrasonic transducer to move the ultrasonic transducer A three-axis rail in the form of a cylinder connected to both sides and a lower end of the conveyance unit in a direction perpendicular to the ultrasonic wave converting unit for easy movement of the conveyance unit And a central shaft which is coupled to the rail in the same direction as the rail at the center of the conveying portion and which is in contact with the rail on the inner side of the conveying portion contacting the biaxial rail connected to both sides of the conveying portion, And is characterized by its constitution.According to the cartridge for ultrasonic probe including the pressure shock absorber proposed in the present invention, in the transfer apparatus for moving the ultrasonic transducer, the rail shaft connected to the t
