This course is an introduction to the history, components, playing and representative players of Erhu. The Chinese fork music Erhu originated from Huqin, which with a history of more than 1,400 years. It is a musical instrument that conveys the beauty of harmony and love. The earliest “Huqin” appeared in the Tang Dynasty, including many “Hu” musical instruments passed from the Silk Road to the Central Plains. The originator of “Huqin” was the musical instrument in Tang Dynasty —“Xiqin.” The earliest“Xiqin” was a plucked stringed instrument .Although the shape was similar to Huqin, yet it was played with bamboo slices. It is mostly referred to as “pipa,” and then gradually refers to "Horsetail Huqin". In the Song Dynasty, the Dangxiang people founded the Western Xia Regime, which lived in Modern Qinghai, southern Gansu and northwestern Sichuan. This was a tribal that lived on nomads. “Horse” was their sign and symbol, as well as the core of their political, economic, and cultural life. As the product of the time, “Horsetail Huqin” was widely used in military ritual music and religious activities.