Computer program about the simplex method -one of the most popularity used linear programming- has been studied. Variable and subject to the restriction are growing according to the growing of all of the problem. In this paper, the problem that can be solved by simplex method may be processed with enormous block unit ( $50;{ imes};50$ ). Because of using computer all of the problem can be solved more accurately and quickly. In appendix, computer program and running example are recorded.