The mosque is one of the most prominent Islamic architectural monuments, and study and research on it is essential because architecture begins with Islamic civilization. The mosque is a manifestation of visual beauty and a prime example of the incorporation of symbolic forms with deeply held beliefs in the realm of material life that, in addition to providing a place of worship with a language of irony and art, speaks of religious knowledge and the mystery and mystery of the law. , And therefore of special importance and sanctity. The mosque is originally attributed to the divine essence of God and expresses its artistic architecture in the most transcendent human way . In this article, while explaining the literal and idiomatic meanings of the mosque and its history, the importance and necessity of the mosque's ordinances and finally its architecture and functions in Islamic civilization have been studied using library resources and by a descriptive-analytical method.