An ultrasound diagnosis apparatus includes: transmission and reception circuitry that generates reception signals corresponding to channels, from reflected waves arranged to be received at mutually the same time by transducer elements that transmitted an ultrasound wave, by controlling transducer elements included in an ultrasound probe; extracting circuitry that extracts, prior to a beam forming process, first signals corresponding to the channels from the reception signals corresponding to the channels while suppressing signals originating from a tissue and further extracts a second signal by performing the beam forming process after suppressing, of the extracted first signals corresponding to the channels, a component in a predetermined direction; calculating circuitry that calculates blood flow information from the second signal; and controlling circuitry that generates a blood flow image from the blood flow information and causes display to display the generated blood flow image.