PROBLEM TO BE SOLVED: To allow suitable display of an image of a subject.SOLUTION: A spectacle wearing parameter measurement instrument analyzes a front image of a subject wearing a spectacle frame, a right side image of the subject wearing the spectacle frame, and a left side image of the subject wearing the spectacle frame to measure a spectacle wearing parameter of the subject and includes display control means for simultaneously displaying the front image, the right side image, and the left side image on a display unit. On the same screen of the display unit, the display control means may display the left side image on the right of the front image and may display the right side image of the subject on the left of the front image.