The double-pipe Bau is based on the traditional Bau, and through the combination of two Bau, the Bau's range and performance are expanded on the basis of not destroying the natural and most beautiful sound of the Bau.

When playing the double-pipe Bawu, the body of the pipe is placed vertically, and the two reed pipes are placed in the mouth. Blow the air drum reed according to the hole pronunciation, the range c1-c2, is one octave. Generally do not over blow.

The sound of the double-pipe Bau is crisp and bright, and the volume is large. Often used as a soloist or to accompany folk songs and dances. The music includes "Zijiemo" and so on.