Provided is a mobile image-forming device. The mobile image-forming device according to an embodiment of the present disclosure includes a surface measuring unit configured to measure a contact area with the mobile image-forming device in a surface area on which a print image is to be printed, an image processing unit configured to extract at least one of curvature data and moisture data from the measured result and correct the print image based on at least one of the extracted curvature data and moisture data, and an image forming unit configured to print the corrected print image on the surface.