The invention discloses a positional cutting method. The positional cutting method comprises the steps that a feeding device sequentially conveys cutting materials to photographing areas, so that the material to be cut is determined; a photographing device obtains independent images of a plurality of areas of the material to be cut and sends the independent images to a control device; the control device splices the independent images of the multiple areas, so that an integral image is obtained; patterns in the integral image are recognized, and the recognized patterns are compared with a corresponding standard pattern, so that the deviation value of each pattern corresponding point is determined; the standard cutting path corresponding to each recognized pattern is corrected, so that an actual cutting path is obtained, and the obtained actual cutting path is sent to a cutting device; and the cutting device cuts the material to be cut according to the received actual cutting path. By adoption of the positional cutting method, the problem that assembly line type automatic, continuous and accurate cutting cannot be achieved is effectively solved. The invention further discloses a positional cutting system corresponding to the positional cutting method.