The invention relates to a probe that is comprised in an ultrasonic diagnostic system, wherein the probe comprises: a scanhead which includes a housing that functions as a handle, a transducer that is installed on one side of the housing, a tuning board that is accommodated within the housing and has one side connected with a PCB of the transducer, and a board connection-connector that is connected with the other side of the tuning board and a cable assembly which has one end on which a scanhead connector detachably coupled with the board-connection connector is positioned, and has the other end on which a system connector is placed. Since the scanhead can be separated from the cable assembly such that the scanhead can be replaced, overall convenience of a user is improved greatly, and consequently, the ultrasonic diagnostic system can be miniaturized and carried in a portable form.