The author in this article has chosen all Imam Ali’s (A.S) speeches in Nahj-Albalagheh which are specifically about Arabs situation in the ignorance era. The author analyzed these speeches according to other sources and their interpretation. Several historical views have been presented about pre-Islamic Arabs and the historians expressed them more or less. Since Imam Ali (A.S) lived in that society before Islam, he had reported the conditions of the time of Jahiliyya precisely. In this writing, circumstances of pre-Islamic era of ignorance will be examined according to Nah-Al-Balaghe. First the meaning of Jahiliyya and cultural and religious circumstances of that time are explained. Socio-economical conditions and signs of Jahiliyya after beginning of prophetic mission is also taken into consideration.