Electronic Commerce is an emerging concept that describes the buying and selling of products, services, and information via computer networks, including the Internet. There are many applications of electronic commerce, such as home banking, shopping in stores and malls, buying stocks, finding a job, conducting an auction, or collaborating electronically on research and development projects. The impacts of electronic commerce on the amount of delivery materials may be dramatic. In this paper, the amount of delivery materials on account of developing electronic commerce are estinated. So in order to reduce the logistics cost because of development of electronic commerce, social infrastructures should be prepared.