Public service, which is one of the important foundations of administrative law and is in the interests of public interest by the government. Due to developments in the role of the government efficient, it needs to create a competitive environment, as a result of public services the best and the lowest cost. Competition law is one of the important principles of public economic law, which is a set of rules and regulations aimed at maintaining and facilitating competition in the market and counteracting the emergence of anti-competitive practices. government’s ability to provide public services foster require to competitive practices. Considering that taking into account the general interest, competition law will regulate intigrity competition among the actors in the field of production and distribution, and economic efficiency, and ultimately improving public services and public welfare. In the study, while explaining the concepts of public services, competition law, it examines the effects of competition law on public service .