The goals of this final paper are based on establishment theoretical entries, characteristics and importance of public procurement, ie. functioning process of public procurementin Europe and, especially, in Republic of Croatia.The case of this research is system of public procurement's analysis in Republic of Croatia in three years: 2008th, 2014th and 2018th. With results of research it can be conclude that public procurement presents very importatant segment of state's economy. Furthermore, the results also prove the importance of monitoring the Law on Public Procurement and, as a result, the quality of whole system increases. Also, besides the entire public procurement process simplification, its usage implies disadvantages. However, there are more highlighted advantages so disadvantages of public procurement's system, next to these advantages, overshadow. What is the most important to conclude from this paper is that every state, and so Republic of Crooatia, needs to improve the system of public procurement constantly because of even better and successful business.