The plus-key short flute is reformed and made on the basis of the short flute. The overall length of the pipe is 34.5 cm and the inner diameter is 1.2 cm. Socketed, you can adjust the pitch.

There are 10 sound holes on the tube body (9 in the front and 1 in the back), 3 of which are closed holes controlled by the buttons. You can play music on the seven-tone scale, and you can turn two or three keys. When playing, the right hand controls the 3 finger holes and 2 key holes above the tube body, and the left hand controls the back hole (thumb), 3 finger holes and 2 key holes above the tube body. The lower lip is against the blowing hole, and the air blows against the edge of the blowing hole, causing the air column in the tube to vibrate and sound. When playing, the head needs to be shaken from side to side, so that the breath blown into the pipe changes, and a larger trembling sound is formed, which is unique.

The sound range of the plus key short flute is from (bb1 to f3), and the tone is soft, bright and clear. It can be played solo, and is mostly used for folk instrumental ensembles to accompany songs and dances. It is also often played with a flute that is an octave lower than it.