The invention provides a lattice target image characteristic point identification method of an image registration experiment. The method comprises the steps of a step of confirming a lattice target image characteristic point distribution area; a step of extracting a target image characteristic point; a step of performing image inclination correction; a step of picking four boundaries of the lattice in the image; a step of identifying an image characteristic point; and a step of performing image inclination restoring. The lattice target image characteristic point identification method has functions of extracting and identifying the lattice target image characteristic point and furthermore has advantages of identifying noise points in the image, determining whether lost characteristic points exist in the image, reducing requirements for image definition and target placement position, and improving accuracy and identification precision in characteristic point identification. The lattice target image characteristic point identification method is suitable for performing identification, visual measurement, visual calibration and the like on multi-characteristic-point targets in an image registration experiment, etc.