Large templates and multi-range-gate relation arithmetic is highlighted in the application of purview movement analysis due to its excellent stability and accurate calculation under the situation of low Signal to Noise Ratio(SNR) and with more models in image. Aiming at real-timing requirement of large templates and multi-range-gate relation calculation, this article presents a kind of parallel pipelining calculating structure. The structure can calculate normalized relation using the template as large as 32×32 in real time when inputted in digital video coding of ITU656. Meanwhile the structure can change the templates in real time according to the position information of the image in the video coding to realize multi-range-gate searching. The results of experiments show that the structure of relation calculation has resolved the real time problem effectively just with a delay of 1.04 μs.