The main idea in this paper is to study Dynamical system, how to extend this asymptotic behavior from a point to set. We know the contractive function on R. We will have only a fix point, and use the method of recursion to get its answer. We apply it to the distance of set. If we use Hausdorff, it leads to the similar result. And at the end of the paper, we have provided questions to readers who interested in this aspect to study.