This article presents the use of enterprise systems, e-procurement and evaluation (effectiveness) of their impact on stock refinishing system through the study. Defined the concept of e-procurement and the genesis of the creation of electronic public administration, as a direct determinant of the creation of an electronic purchasing platform. Then illustrated the use of e-procurement in the business market (with segment division), the benefits of the deployment and use in particular areas of business. The penultimate section describes the basic concepts and models for stocks management. The final section presents the results of copyright on specific applications of e-procurement, we examined what changes have occurred in companies after the commencement of the use of e-procurement systems and how this affected the inventory management model.