PROBLEM TO BE SOLVED: To improve ultrasonic probe position guide in ultrasonic image photographing using biological light measurement.SOLUTION: An ultrasonic diagnostic apparatus is provided with an ultrasonic probe, an optical probe, an image generation unit, a calculation unit, a support information generating unit, and an output unit. The optical probe includes: a light irradiation part disposed at the periphery of an ultrasonic sending/receiving surface of the ultrasonic probe and on a longitudinal center axis of the surface, and irradiating the inside of a subject with light from at least one position and a plurality of light detection parts disposed at the periphery of the ultrasonic sending/receiving surface on different positions while defining a longitudinal center axis of the ultrasonic sending/receiving surface as a symmetrical axis, and detecting the intensity of the light reflected in the subject. The calculation unit calculates a position and a size of an abnormal region showing a prescribed light absorption coefficient in the subject on the basis of the intensity of the light detected by each of the light detection parts. The display unit displays an ultrasonic image showing the position and the size of the abnormal region.
