An ultrasound diagnostic apparatus includes an ultrasound probe including a transducer array, and a back unit connected to the ultrasound probe by wireless communication and generating an ultrasound image based on reception signals outputted from the transducer array, the ultrasound probe including a middle unit connected to the back unit by wireless communication and a front unit detachably connected to the middle unit and including the transducer array, and the front unit having a transmission driver that supplies drive signals to the transducer array and causes the transducer array to transmit an ultrasonic beam and a preamplifier that amplifies reception signals outputted from the transducer array.
