The embodiment of the invention relates to the technical field of printers, and provides a photo printer and a photo printing method. The photo printer comprises a paper cabin and a printer body, thepaper cabin is detachably connected with the printer body, and the paper cabin is internally provided with thermo-sensitive papers; and the printer body comprises a housing and a main control chip anda thermo-sensitive printing head which are arranged in the housing, the housing is provided with a camera device and a button module, and the main control chip is electrically connected with the thermo-sensitive printing head, the camera device and the button module. When a user presses the button module, the camera module collects external image information and sends the external image information to the main control chip, and the main control chip converts the image information to black and white images and controls the thermo-sensitive printing head to print the black and white images ontothe thermo-sensitive papers. Compared to the prior art, the photo printer and the photo printing method employ the camera device and the thermo-sensitive printing head to achieve camera and printingtimely of photos, the cost is low, and users can perform printing at will.