An ultrasound imaging apparatus may control an ultrasound image in various ways and improve user convenience by controlling a touch screen or display output by the ultrasound imaging apparatus in accordance with a touch pressure or touch time of a user.The ultrasound imaging apparatus may include a probe configured to emit an ultrasonic signal to an object and receive a reflected ultrasonic signal； a processor configured to generate an ultrasound image based on the ultrasonic signal received by the probe； and a touch screen configured to output the ultrasound image generated by the processor and receive a touch of a user or a pressure of the touch, wherein the processor controls the ultrasound image and the touch screen based on the pressure of the touch.
