The revelation of the holy Quran at the beginning of Islam (13 B.H. to 11 A.H.) had effects on the human society as a whole and especially on the Arabic regions in cultural, social, political and military aspects. Among these affects the affect of Quran on Arabic language can be named. In this essay, Five categories of the affects of the Quran on Arabic language are discussed including: Giving superiority to Quraish dialect and weakening the other ones, introducing new social, military, political subjects and soon causing the use of some new meanings for the words as a result, permanence of Arabic language and its improvement and finally, the appearance of many scientific sources in different fields of linguistics such as etymology, syntax, vocabulary as well as rhetoric's.