EC(Electronic Commerce) reduces the middle love of business process and makes the gap doser between suppliers and consumers. EC also makes it possible to products and much more satisfaction to consumers reducing costs. Thus when we study EC, we need to consider business side of EC as well as its technical side. With that point, this study classifies the business factors of EC systematically. This study does not enumerate bits of the factors but present a business technology framework to analyze the mutual relations among the factors.