The present invention provides a fixing device for bringing an ultrasonic probe into close contact with an eye region, the fixing device comprising: a headset that is worn on the head of a subject; a bracket that is fixed to the front side of the headset; and a probe fixing member that is provided at the lower end of the bracket to fix the ultrasound probe, wherein the bracket comprises: a height adjustment bar that adjusts the height of the probe fixing member by moving along a vertical line corresponding to the height of the subject's eyes; a depth adjustment bar that has one side rotatably provided at the lower end of the height adjustment bar and rotates so as to correspond to the depth of the subject's eye to adjust the depth of the probe fixing member; and a tilt adjustment bar that is rotatably provided on the other side of the depth adjustment bar and rotates so as to correspond to the position of the subject's eye to adjust the inclination of the probe fixing member, so that the height, angle, and depth of the bracket for fixing the ultrasound probe positioned in the eye region may selectively vary, and thus, the probe can be positioned at a corresponding location according to the shape of the subject’s head or the projecting state of an eyeball, thereby constantly maintaining a close contact degree between the probe and the eye region.