The invention discloses an identification photo automatic cutting method and device and a system. An identification photo image placed in a preset recognition area is collected; the identification photo image is subjected to image recognition treatment, and the edge lines of each photo to be cut into the dimension in the identification photo image are recognized; cutter position data needing to be cut is calculated according to relative position information of all the edge lines in the image; and the cutter position data is sent to a cutting control module, and the cutting control module controls a corresponding cutter to carrying out cutting. The image recognition technology is utilized for recognizing one version of identification photos, the position of each cutter is recognized, cutting is carried out through the reasonable arrangement and calculation control of the cutting cutters, full-automatic cutting of the identification photos is truly achieved, cutting efficiency is greatly achieved, and losses and accidents caused by human reasons are reduced.