An optical image measuring apparatus including an optical system, image forming part, controller, and composite-cross-sectional-image forming part. The optical system includes a scanner changing an irradiation position of signal light on an object and a focus position changing part changing a focus position of the signal light. The optical system detects interference light of returned light of the respective signal light from the object and reference light. The image forming part forms a cross-sectional image based on detection results of plural interference light corresponding to plural irradiation positions of the signal light. The controller controls the optical system to irradiate the signal light onto the plural irradiation positions repeatedly while changing focus position. The composite-cross-sectional-image forming part forms one composite cross-sectional image based on two or more of the cross-sectional images based on results of repetitive irradiation of the signal light.