The arrival of Islam in Kutai Kartanegara was brought by two clerics, namely Datu Ribandang and Datu Ditiro, with the acceptance of Islam by the King of the XVII century, Crown Prince Mulia. The two Muballig brought an appeal, inviting the king's family and people to embrace Islam. The king also accepted the condition that Tuan Tunggang Parangan could enter into a magic battle. This was done to fulfill the request of the Crown King, but it was agreed that if the Crown King lost, he would think twice about the creed or convert to Islam. But if Tuan Tunggang Parangan (Datu Ditiro) lost, he was willing to serve the Kingdom. After fighting the supernatural powers, all were won by Tuan Tunggang Parangan. This means that the King of the Crown must keep his promise to pronounce the shahadatain through Tuan Tunggang Parangan (Datu Ditiro) guidance. The people of Kutai Kartanegara have experienced a powerful effect from Islam due to the advancement of society and its growth. The objective is to comprehensively understand how the Islamic faith and Kutai Kartanegara's Erau culture have evolved and how Islam has influenced Erau culture. This qualitative research employs anthropological methodologies to explore cultural events within the context of the Islamic religion in the procession of carrying out the Erau culture in Kutai Kertanagara. Since this study will be conducted spontaneously, there are no constraints on how to interpret or comprehend the phenomenon being investigated.  The research results on the traditional Erau ceremonial party are held annually as a ceremonial event in the Kutai community. Cultures are displayed both in coastal and inland cultures, for example, sound art in the form of hadrah, Qasidah and barzanji, music in the form of tingkilan music, literary arts, tarsul poetry of the pantun type recited at weddings, and tasmiyah. Fashion art in the form of traditional clothes of Erau Takwo miskat, Chinese clothes, Javanese clothes and Bugis clothes, and dance arts in the form of Jeppen dance, masks, rudat, ganjar ganjur and even social and political institutions. Economy, trade were held and demonstrated again to refresh memory and knowledge of the traditional Erau ceremony.