One of the most common ways of governing throughout the history of political philosophy that many philosophers have studied is democracy, and plato is considered as one of the first leading philosophers in this context. For example, democracy in his intellectual geography is the worst kind of government that, unlike other forms of government, does not have the ability to focus on positive things. In fact, he sees democracy as the rule of ignorant people who are far from ideal, and which ultimately leads to democratization. Thus, this article offers an analysis Plato's view of democracy and the theory of the "Philosopher King" in the context of the Republic. And explains Plato's strategy in governing the affairs of society, according to him only the  philosopher king could be the true ruler of a society. Finally, it examines the critiques of Renaissance, modern, and contemporary thinkers on the theory of his philosopher king.