Friday prayer is one of the political and social acts of worship in Islam. Due to the cultural, devotional, political and social functions of Friday prayer, in addition to being emphasized in the Holy Quran, it has been confirmed and emphasized in Islamic traditions by Imam Huda (peace be upon him). Cultural and political influences are the basis for the connection of religion with the social system, which as a result will greatly influence the actions and reactions of the Islamic society. In this article, with the descriptive-analytical method, we came to the conclusion that in the thought and intellectual system of the Supreme Leader of the Islamic Revolution, the most important functions and achievements of Friday prayer can be counted as cultural and social political achievements. Among the cultural works, we can mention the attention to God, the descent of collective blessings, avoiding secularist thoughts, cultural guidance in the form of political demand, political enlightenment and explanation jihad. The socio-political effects of Friday prayer for the society and people can be explained in the form of the political insight-enhancing effects of Friday prayer, which include distinguishing and recognizing right from wrong, responding to social political doubts of the day, informing about surrounding events, increasing unity. And he pointed out the sense of collective authority that can be found in the words of the Supreme Leader of the Islamic Revolution