In their animist religion, Pa Xay is the creator of the universe, heaven, earth, rivers, streams, rain, wind, human beings and death.

The Brau have led a nomadic life for a long time. They practise slash-and-burn cultivation to grow rice, corn and cassava with rudimentary tools such as axes, knives and sticks to dig holes for planting seeds, which makes their productivity very low. Generally their houses are built on stilts.

According to custom, the Brau have their faces and bodies tattooed and their teeth filed. Women wear a lot of chains around their arms, ankles and necks. Men often wear loincloths and women wear panniers. All leave their upper torsos naked.

Young men and women are free to choose their partners. The family of the young man propose marriage and hand wedding presents to the bride's family, but the wedding ceremony is organized by the bride's family. After marriage, the groom brings his wife and children home.

It is customary that the dead person is brought outside the house and placed in a coffin made from a hollowed out tree-trunk. The coffin will be left in a temporary house built by the villagers. All the people come to offer their condolences and gongs are beaten. Some days later, the coffin is buried. All objects such as jars, baskets, knives and axes left in the funeral house are provided to the deceased by his or her family.

The Brau like to play gongs and traditional musical instruments. They have various kinds of gongs; a set of two gongs (called chieng tha) is worth 30-50 buffaloes. Young girls often play Krong put, a musical instrument made of 5-7 bamboo tubes, long and short, which are joined together. The sound is produced when air is forced into them by the clapping of the hands. The length of the tubes and the streangth of the claps will make the sound variation. The Brau have appropriate folk rhythms used to lull children to sleep or sing at wedding ceremonies. The young Brau enjoy kite flying, walking on stilts and phet playing.

Due to backward technology and habits and their nomadic life, the Brau are very underdeveloped. At a mere 200, they have one of the smallest populations of any ethnic group in Vietnam..