The Chutiya people traditionally observe three major festivals namely Ivraghi Purnima festival or kachaikhati puja, Bihu festival and Durga Puja festival. in every maghi purnima the Chutiya people traditionally worship their supreme deity kechaikhati or Tomreswari with sacrifice of animals. In this festival the people performed the deodhani Nitya (A kind of traditional dance performed solely by women) and Deo utha Nitya (A dance performed by the person who cuts the neck of the sacrificed animal): The people who come to sacrifice animals don't take any meal before the rituals are over. The blood of the sacrificed animal is the main offering for the people. This blood is directly rAkei by the Bolikatia (The man who cuts the animal) and the other people take these blood with rice powder or other offerings. The A4oghi purnima or kachaikhati puja organized in the Ai-thans (A kind of mother goddess trantic temple). It is to be noted here that in every Chutiya dominated area there is an Ai-than (mother goddess temple). In this temple the Chutiyas observe the Kechaibhati Puja and Durga Puja. These practices are still in vogue in many areas of Assam some of them are Harhi Dewaloi in Dhakuakhana, Korsorn Dewoloi in Lakhimpur, Gangamow than in Sunitpur,
The Durga Puja festival is one of the important festivals of the Chutiyas, almost all Chutiya people traditionally observe this puja with heart and soul, During the time of Chutiya rule there was sacrifice the both man and animals at Tomreswari Mai Mandir at Sadiya. At present they sacrifice the animals in the Ai-thans (Mother goddess temple) and they perform the Dec-utha Nach in their. The people believe that Mar-Durga always defend the people, so their duty is to satisfy Ma-durgo through sacrifice.
The Bihu festival is the main social festival for the Chutiyas. They observe the three Bihus: the Bohog Bihu or Range Bihu, Magh Bihu or Bhugoli Bihu and the Kati Bihu or Kongo!". Bihu. In Bohag Bihu the Chutiyas observe the Sot Bihu (seven days of Bihu) tradition. The first day of Bihu is observed as Garu Bihu, the second day as Manuh Bihu (man festival), the third day as Gukhani Bihu, the fourth day as Kutum Bihu, the fifth day as Ilia Bihu and sixth day as Fat Bihu and the seventh day as Hat Bihu or Meta Bihu.