There is provided a mixed reality image processing apparatus capable of forming mixed reality image data that matches an illumination environment of an external world. The mixed reality image processing apparatus includes a standard illumination environment processing unit configured to extract illumination environment information, which indicates the illumination information of the external world, from image data imaged by an imaging unit, and a local illumination environment processing unit configured to convert mixed reality image data, which is formed by combining virtual image data to the image data, into image data corresponding to the illumination environment of the external world based on the illumination environment information.
