Public procurement practices are relatively new in the public sector, but everyone knows the complicated regulation and coordination of this process. A number of legislation, which controls a range of public procurement, were legitimated because of requirement to regulate purchases from national budget, after the restoration of independence of the Republic of Lithuania. The paper analyzes the legal context of the electronic public procurement and particular attention is paid to business development and corporate competitiveness in the EU (European Union).By 2010, all EU countries should have been installed electronic public procurement systems and at least 50 percent public procurement should have been made by this way. There for a membership of different countries procurer’s participation is essential for EU and the Republic of Lithuania’s domestic economy, because of safely competition in all EU. Implementation of a model of e.government (electronic government) service like government for business and business for government related with electronic public procurement, which help to reduce bureaucracy, simplify formal procedures, save civil servants time and public money, improve product’s and service’s quality and promote competition between suppliers, public and private sectors partnership. E.government is an integral part of modern economics, called as the knowledge economy. E.government help to reduce bureaucracy and simplify formal procedures, while civil servants are saving time and public money, improve product quality of purchased services, and promote competition between suppliers, public and private sectors collaboration and partnership.