In the erhu playing technique, changing the handle is very important, it is an important means to expand the expressive power of the erhu, and it is also an important lesson for learning the erhu.

At the beginning of learning how to change the bars, students are prone to nervousness psychologically. The main reason is that due to insufficient relaxation, the tiger's mouth is tightly clamped to the piano rod, resulting in blockage and poor smoothness when changing the bars. At the same time, the students do not pay attention to the angle of the piano when changing the bars.

When changing bars, the tone is inaccurate or the movement is heavy and awkward. Teachers should give students more demonstrations of changing the handle, and explain the essentials of changing the handle and the issues to pay attention to.

Swapping is the act of playing from one handle to another.

When changing handlebars for the first time, you must strictly abide by the method of using the fingers with your hands, that is, when changing handlebars upwards, your wrists should lead; when changing handlebars downwards, your wrists should be brought up first. It's not noticeable at times, but it still exists because the handlebar change is done by the combined action of the upper arm, forearm, hand and fingers.

When learning to change the handle, it can be carried out in stages. On the basis of the first position's proficiency in the scale, the second position is practiced, and then the first, second, and third handle changing exercises are continued.

In the practice of changing the bar, special attention should be paid to the accuracy of the sound and reducing the friction of the tiger's mouth on the piano bar, which not only makes the up and down changing of the bar more flexible, but also keeps the body of the piano stable. Step by step, start slowly, and then gradually speed up when you are proficient.