It is made by hollowing out the large trunks of local sycamore trees, mango trees or toon trees. The shape is similar to that of a water tank. One end is large and one end is small, and both sides are covered with cowhide, suede or other animal skins.
The size of the drum body varies, and the specifications and dimensions are not fixed. Generally, the total length is 100 cm to 120 cm. The diameter of the drum surface at the large end is 50 cm to 60 cm, and the diameter of the drum surface at the small end is 25 cm to 30 cm. On the iron ring larger than the drum mouth, and then cover the drum mouth at both ends, tighten it with cowhide strips, and adjust the tension of the drum skin. The internal structure of the drum is special, and it is dug into two drum shells that can communicate with each other in the middle, so it can produce a good sound resonance effect and have a long reverberation.

There is also a circular hole with a diameter of 3 cm to 5 cm on one side of the middle part of the drum body. In the Dai area of Longchuan, the drum is usually soaked in water, and the drum is picked up before use, and the water in the drum cavity is poured out from the round hole; in the De'ang area of Longchuan, the drum is not soaked in water It is usually placed in Theravada Buddhist monasteries, but before use, a certain amount of water or wine should be poured into the drum to moisten the drum body to obtain a better sound effect, so it is called a water drum.