Homer was mentioned by Ionian philosophers, poets, and historians since the seventh century BC and is one of the important poets who influenced Greek culture for centuries. So much so that it is almost impossible to talk about a writer who did not mention Homer’s name until it came to Plato. The reason for this is that in the epics of both Homer and Hesiod, a religion that reveals all the beliefs, customs and traditions, feelings, and passions of the Greeks is hidden. This religion, in which the deeds and names of the gods are mentioned, is also the mythology of the Greeks. To put it in the words of Azra Erhat, Homer was “not only a poem in Plato’s time, but a holy book”. It is remarkable that Homer, who is a basic reference for Greek religion, politics, and military service, was exiled from Plato’s ideal state. The main issue of this study is Plato’s argument with Homer. In this context, the study aims to analyze the conflict between the philosopher and the poet and the reasons that pushed Plato to this idea by centering Plato's dialogue titled The Republic.