According to one embodiment, there is provided an ultrasonic diagnostic apparatus which comprises data processing circuitry, a display, input interface circuitry and system control circuitry. The data processing circuitry generates at least B-mode data and Doppler spectral data. The display displays images based on the B-mode data and the Doppler spectral data that have been generated by the data processing circuitry. The input interface circuitry inputs one of an instruction to transit to a mode of the Doppler spectral data and an operation to a range gate. The system control circuitry changes a display form of the Doppler spectral data displayed on the display based on the Doppler spectral data generated in a predetermined time after the input in response to the input to the input interface circuitry.
