Humming is a magical singing art created by the Mongolian people: a singer sings two parts at the same time purely with his own vocal organs. The basic structure of the relationship between the parts of Humming is a combination of a continuous bass and the melody flowing on it. It can also be divided into "overtone Humming", "tremolo Humming", "compound Humming", etc. It is unique among the folk songs of various ethnic groups in China. Humming is mainly distributed in Xilin Gol, Hulunbuir Grassland and Hohhot City in Inner Mongolia Autonomous Region. This singing style can also be heard in the Mongolian settlements in the Altai Mountains of Xinjiang Autonomous Region, as well as in Mongolia and Tuva, Russia. According to research, the history of Humming can be traced back to the Xiongnu period, and it was created at the latest before and after the formation of the Mongolian people. As a special form of folk singing, Humming is an outstanding creation of the Mongolian people. It conveys the Mongolian people's deep philosophical thinking and understanding of the natural universe and all things in the world, and expresses the Mongolian people's pursuit of harmonious survival and development and healthy aesthetic taste. Humming is one of the oldest art forms of the Mongolian people. It retains some elements of primitive singing and is a long-lasting echo from the depths of the nation's memory. It is closely related to the history and culture of the Mongolian people and has important value for anthropology, ethnology, and folklore research. Saving and protecting this magical singing art from extinction is an important and urgent task.