The Qiang flute was brought from the western region by the Qiang people who migrated south during the war years of the Qin and Han dynasties. According to historical records, before the Western Han Dynasty, the Qiang flute had four holes on the surface. In the first century AD, Jing Fang added a high-pitched pressing hole, making it five holes. Ma Rong of the Eastern Han Dynasty once wrote in "Flute Fu" that "the double flute in modern times originated from the Qiang", and the Qiang flute has developed into a six-hole flute in modern times. From this, it can be inferred that the Qiang flute has existed for at least two thousand years. The Qiang flute is a folk vertical blowing instrument made of two bamboo tubes about 1520 cm long, with the same size of tube holes, tied together, wrapped with silk thread, and with bamboo reeds inserted in the tube heads. It is most commonly played in the form of a solo, with more than ten ancient tunes expressing a wide range of content, mainly conveying people's thoughts and yearnings. The sound of the Qiang flute often gives people a sense of illusion and moving. The Qiang people often use it to express their emotions of joy, anger, sorrow, and happiness. The main method of playing the Qiang flute is to inflate the cheeks for breathing. One can play for several minutes or even a tune in one breath, which requires high skills. In addition, the Qiang flute also has laryngeal vibrato, up and down glissando of the fingers, and other techniques. In addition, the double-tube production has a different pitch and the sound of double reed resonance, so its sound quality and melody are unique. The production of the Qiang flute generally uses arrow bamboo with straight rods, round tubes, long sections, uniform thickness at the head and tail, moderate thickness of bamboo meat, tough texture, fine fibers, and not easy to crack. The pitch is determined according to the length, thickness and size of the tube. The hole spacing must be exactly equal, otherwise the pitch will be different. Since the Qiang people have no written language, the history and culture are not only passed down orally by the Qiang monks, but the Qiang flute is also an important channel for communication and inheritance. Therefore, it plays an important role in the study of the Qiang people, history, and culture. The Qiang flute has unique musicality, timbre, and playing skills. It is a very valuable research object in the study of Chinese folk instruments. The Qiang flute uses two pipes and has a more complex structure than the bamboo flute. It requires more techniques and is more difficult to play. There are not many learners, and there are only a few people who can play it and the folk inheritors who can master the craftsmanship of the Qiang flute. If it is not protected in time, the craftsmanship and unique playing method of this ancient folk instrument will be lost. Information source: Mianyang Intangible Cultural Heritage Protection Center Information source: Mianyang Intangible Cultural Heritage Protection Center