Erhu is a very expressive musical instrument. Its timbre, range and artistic expression characteristics can easily communicate with the human mind. Therefore, it can express the rich emotional world of people in detail, depict the colorful atmosphere of nature, and bring people all kinds of strange and wonderful feelings.

Erhu bow is divided into five types: flexibility, agility, fluency, dexterity, and perseverance:

1. The flexible bowing method mostly appears as the slow bow, which has two characteristics: one is the slow running speed of the bow; the other is the fine and soft tone of the bow head. This type of bowing is mostly used to express beautiful, lyrical melodies and express people's nuanced emotional experience.

2 Agility bows mostly appear as slow bows. Its two characteristics are: the bow runs slowly and the bow sound is tough. Because of the need to use the fingers, the agility of the wrist to make an explosive movement, and to distinguish it from the previous bowing category. This type of bow is mostly used to express sad and depressed musical emotions.

3 The fluency of the bowing method is that the speed of the bow is fast; the second is that the bow head sound is clear and sharp.

4. Dexterity mainly refers to those fast combined bowing methods, which are characterized by: fast and changeable bowing speed, and relatively small range of motion. It mainly expresses warm, cheerful and lively passages.

5 Rigidity has two characteristics: one is the strong force of the bow; the other is the strong explosive force of the bow head. This kind of bow is often used to express the magnificent scene or heroic spirit, as well as the excitement and tension.