The present invention is one photographic pointer positioning system. The photographic pointer positioning device has communication interface connected to host computer, display screen with one or several special marks adhered to the edge, video camera to take the whole display area, and image processing circuit for the edge processing of the taken image to obtain the coordinates of the edges of the display area. Setting the special mark can speed the image edge distinction and raise the coordinate accuracy. The coordinates of the video cameran aiming point in the display screen is obtained with the coordinate calculating program and is transmitted to the host computer for correlated program treatment. One aiming point correcting method is provided to correct the error of the aiming point to the practical coordinate, and this makes the photographic pointer positioning device suitable for various kinds of display screen.