The purpose of the present invention is to improve the accuracy of Doppler measurements. An ultrasonic diagnosis device comprises: a transmission unit 12 for transmitting, through a probe 14, an ultrasonic wave for each of a plurality of transmit beams formed at different positions or in different directions a reception unit 20 for receiving, through the probe 14, an ultrasonic wave for each receive beam included in a receive beam set formed to correspond to each transmit beam a Doppler processing unit 24 for determining a Doppler measurement for each of the receive beams and a combining/selecting unit 26 for combining a first Doppler measurement determined for a first receive beam belonging to a receive beam set formed to correspond to a first transmit beam and a second Doppler measurement determined for a second receive beam belonging to a receive beam set formed to correspond to a second transmit beam when the first receive beam and the second receive beam are in a predetermined positional relationship.
