The tone of night flute varies, the most common is G, and F, C and so on.

When the 6 sound holes are fully closed, the barrel tone is (d1), and through overblowing, the sound range is (d1-e3), with two octaves and another major second. The timbre of the xiao is soft and elegant, with a deep pronunciation in the bass region, which is distinctive when played weakly; the timbre in the midrange is round and graceful; the pronunciation in the treble region is tense. The volume of the flute is low, and the band plays with several flutes at the same time. When playing with a single flute, pay attention to the appropriate volume contrast on the orchestration.

In the traditional tune name of the night flute, no matter the length of the night flute or the level of the tone, any six-hole flute with the third hole as "1" and eight-hole flute with the fourth hole as "1" are called "1". Xiaogong tune", where the sixth hole of the six-hole flute is marked as "1", and the eighth hole of the eight-hole flute is called "1", it is called "zhengong tune", and the fourth hole of the six-hole flute is called "1". The eight-hole xiao with the fifth hole as "1" is called "Fan Zi tone", all the six-hole xiao with the fifth hole as "1", and the eight-hole xiao with the seventh hole as "1" are called "six-hole xiao". Character tone", where the tube tone is "1", it is called "B-character tone", where the first hole is "1", it is called "Shangzi tone", and where the second hole is "1", it is called "character tone". Scale Tone".