The vibrato of the cucurbit flute is formed by the rapid and even alternating vibration of the fingers on the main note and the adjacent note above. The general method of playing vibrato is to first emit the primary note, then quickly and evenly open and close the sound hole on the upper position of the primary note, so that the primary note and the second pitch above it alternate rapidly and evenly, and finally fall to the primary note. It is generally used in the introduction or cadenza and climax of a piece of music. It is used to enhance the effect and set off the atmosphere.

Vibrato practice is the most important part of finger application skills, it is related to the flexibility, independence and durability of fingers, as well as elasticity. So you must take enough time to practice for a long time. When practicing, the fingers should press the strict sound hole, there should be no air leakage, the fingers should be kept in a relaxed state, and each finger should be able to be elastic and flexible. Play the vibrato with a certain amount of force, and blow the punch with a tonality. Vibrato can be slow to fast or fast to slow. The general method of vibrato is to emit the primary note first, then quickly and evenly open and close the upper sound hole of the primary note, so that the primary note and the major second or minor second above the note appear alternately quickly and evenly. Finally down to the original sound. The choice of major and minor second degrees is generally determined by the natural pitch of the key. Hulusi's vibrato also has a minor third.