Disclosed are an ultrasonic probe having an auxiliary monitor mounted thereon and an ultrasonic diagnostic device comprising the same. According to the present invention, the ultrasonic diagnostic device includes: an ultrasonic probe for scanning ultrasonic waves, converting the returned ultrasonic waves into an electric signal, and outputting, on an auxiliary monitor mounted on one side thereof, a part of or the entire image corresponding to the converted electric signal a main body of the ultrasonic diagnostic device which is provided with the converted electric signal and a display device which is provided with the image corresponding to the electrical signal from the main body of an ultrasonic diagnostic device so as to output the entirety of the provided image, wherein the ultrasonic probe comprises an injection device for sucking from or injecting blood or an injection liquid into a predetermined target point within the image outputted on the auxiliary monitor.
