This research examines the acculturation and transformation of traditional values of Banjarese Baayun Maulud . It used religious anthropology approach as an effort to understand the deepest meaning of the research object. The result shows that this tradition was historically started from swinging child ceremony of Dayakese Tribe in Kalimantan, in order to give blessing, give name, pray for safety, and to thank for the child birth. A long with the incoming and development of Islam in this region, the ceremony which was inherited by the ancestors experienced changes. The Islamic preachers have changed and acculturated this ceremony so it is full of Islamic values. The ceremony once called swinging child ceremony, then after the acculturation it became Baayun Maulud. The venue is centralized at the mosque and is combined with the celebration of Muhammad’s birthday. The children are swung with qur’an recitation, rhyme quatrains of maulud, and prayers. The local wisdoms and the religious thoughts has been unified in harmony in the tradition, which becomes the sign of gratitude expressions  for the child birth, as well as for celebrating and honoring the birth of the Greatest Prophet Muhammad SAw.