To improve the measuring accuracy of an image measuring system,the super-resolution image reconstruction technology for an image sequence is researched based on the micro-displacement.As the high accurate micro-displacement is difficult to realize and very expensive, a super-resolution reconstruction method which doesn't require the high accurate micro-displacement is proposed. Firstly, the image sequence based on an arbitrary micro-displacement is obtained. Then, the accurate micro-displacement of image sequence is calculated by the feature points of a tested object or a template using a substrate. Finally, the high-resolution image is reconstructed by the mathematical model proposed in this paper for radiographic measurement. The experimental results indicate that when the image resolution is 4 times that of an original image,the measurement accuracy will promote 29% to 64% according to the different micro-displacements,which shows the method can reconstruct a high-resolution image including tested objects effectively, and can improve the accuracy of the system.