The application discloses a photo printer, which is provided with a anti-warping part avoiding the rotating axis of a winding roller in the paper outlet direction, the anti-warping part upwardly abutting against the printing medium to avoid the printing medium, which is separated from the paper roller, from contacting the ribbon wound by the winding roller. By using the technical scheme, compared with the photo printer in the background art, the user is more relaxed when pulling out the printing medium, the printing medium is less likely to move the body, and the printed photo is less likely to be a waste piece. On this basis, the photo printer provided by the application does not increase the thickness of the body in the up-down direction, so that the photo printer remains portable.