An ultrasonic probe includes a housing shaped like a thin plate and having a sensor surface as a transmitting/receiving surface for an ultrasonic wave, and a hand part having an axial direction, and connected to a side surface of the housing at one end in the axial direction, the side surface crossing the sensor surface of the housing. Thus, it is possible to pick up the hand part to dispose the ultrasonic probe to a desired position, and it becomes possible to check an internal tomographic image of the object viewed from an arbitrary direction without suspending the operation.
