The so-called grip-changing slide refers to the slide played by changing the grip. The grip-changing slide can be divided into three playing forms: the same finger grip-changing slide, the different finger grip-changing slide and the empty string grip-changing slide. The methods of these three forms of performance are different, and the effects of their application in music are also unique.

1. Synonymous grip

Synonymous grip is produced by playing with the same finger (referred to as "synonymy"). Its application generally depends on the melody of music, the style characteristics of music and the arrangement of fingering. The three-degree interval is the most typical sliding sound of the same finger-changing grip. The application of this kind of sliding sound in music has a natural, simple and smooth effect, which will make the melody more singing and more musical. Such as Hua Gutiao (arranged by Shao Zhang). According to the characteristics of the music style, the performer applied the switch-style connecting slide to make the music style simple, natural and lyrical.

2. The sliding sound of the different fingers

The sliding sound of the different fingers is based on the playing method of the different fingers, which is produced by the sliding of the fingers of the medium sound. This kind of sliding sound is widely used in erhu performance, and it has the musical characteristics of lightness, cleverness and natural elegance. For example, "Full Moon Song" (Huang Jinpei's Song). In music, the use of glide is natural, continuous, soothing and internal, and the artistic conception of music is far-reaching, which brings people into the wonderful night with the bright moon hanging high on the branches.

3. Empty-string grip-changing glide

The empty-string grip-changing glide is based on the playing method of empty-string grip-changing, which is produced by the fingers sliding on the strings when changing the grip. It is applied according to the progress of melody and the comparison of music. Such as "A Flower" and "The Hungry Horse Rings the Bell" (traditional music). This kind of slip has certain regularity, and it is often used at the beginning and end of two phrases, which plays a role in increasing the dynamic melody and pushing the music to a climax. In "Happy Songs Can't Finish Singing", the application of small sliding tone also plays a role in increasing the dynamic melody. In the case of "Love Story in the Country", the application of small sliding tone makes the music lively and clear, with a strong sense of jumping, especially the timbre contrast between empty string tone and sliding tone, which deepens the expressive force of the music.