When coming to the buffalo fighting festival in Vietnam, everyone will definitely think of the buffalo fighting festival in Do Son. This festival is held every year on the 9th of the 8th lunar month. This festival has been recognized as a national intangible cultural heritage in 2013. This festival takes place with a solemn ceremony, with a procession of god, with” long tre” and “phuong bat am". To be able to participate in this festival, the buffalo must be carefully cared for about a year. Buffalo must be male buffalo, hook fur, copper skin, thick back, … especially extremely healthy. However, after participating in the competition, all buffaloes will be slaughtered to sacrifice to the temple. This activity takes place with the desire that people have a warm season, and can exploit many fish and shrimp.