An ultrasound diagnostic apparatus includes: an ultrasound probe including a capacitive micromachined ultrasound transducer； an ultrasound observation apparatus, and a reception circuit； a transmission ultrasound transducer and a reception ultrasound transducer included in the capacitive micromachined ultrasound transducer, the transmission ultrasound transducer including a plurality of transmission capacitive cells, and the reception ultrasound transducer including a plurality of reception capacitive cells； a transmission signal cable connecting the transmission ultrasound transducer and the transmission circuit； a reception signal cable connecting the reception ultrasound transducer and the reception circuit； a first matching section and a second matching section that perform electrical impedance matching for the ultrasound transmission signal and the ultrasound reception signal, the first matching section and the second matching section being provided for a predetermined transmission region and a predetermined reception region for generating an ultrasound beam for one pixel, respectively.
