This article began by defining the science of rhetoric. Its function, the emergence of the science of rhetoric, the elements of rhetoric, the basis of the science of rhetoric, the goal of the science of rhetoric, the rhetoric is the excellent use of language terms and the ability to formulate the beautiful phrase which is matching speech to the requirements of truth and the Holy Qur?an and the hadiths of the Prophet, may God bless him and grant him peace, and Arabic sciences in general.