Studying the models of Parliamentary Ombudsman institution in the world in order to describe its position in state's activities as well as clarify the advantages of this institution in the modern rule of law state. This research proposes to apply appropriately the Parliamentary Ombudsman model in Vietnam in order to improve the efficiency of the state apparatus in controlling power over public administrative agencies and promoting human rights and citizens' rights in the current period. | Summary of Doctoral dissertation in Law Comparative study of the parliamentary ombudsman in the world and the applicability in Vietnam