The skin of the erhu is an important device for the sound of the erhu. Generally python skin, snake skin is the lowest erhu skin. It is an important sounding body of the erhu and the key to the vibration source, and has a direct impact on the sound quality and volume. The larger the scales of the python skin, the better the sound. Erhu Qin skin will have a long service life if it is carefully maintained. Therefore, we need to maintain the erhu in our daily life.

Generally speaking, the first process of piano skin processing is to shovel the skin. The purpose of shoveling the skin is to remove the meat and sundries that stick to the skin.

The second process of the piano skin processing is to cover the skin. The purpose of the cover is to stretch the python skin and remove the oiliness on the python skin. There is a process of ironing in the leather covering process, its function is to make the piano skin stable and increase the gloss of the piano skin.

The third process of piano skin processing is skinning. The requirements of skinning are to achieve uniform hexagons and appropriate skin tightness. From the processing technology of the piano skin above, it is very important to remove the oiliness on the python skin, because the oily piano skin will affect the pronunciation of the erhu.

Therefore, in the daily use of the erhu, there is no need to apply vegetable oil, Vaseline, etc. to the piano skin, and there is no need to seal the back of the piano skin. If oily substances are applied to the inner and outer surfaces of the piano skin, it will affect the air permeability of the piano skin and the vibration of the piano skin.

After the skin is covered, the back of the skin cannot be treated, because scraping or grinding the back of the skin from the back of the drum will cause uneven thickness of the skin, and even cause the skin to crack in severe cases. .

In order to locally improve the sound of the erhu, measures should be taken from the strings, bows, daughters and control pads.

Most of the erhus with damaged piano skins that are usually seen are caused by improper storage and infrequent use. For the erhu that is often used, its skin will maintain a certain elasticity, and the sound quality of the erhu is relatively stable. The timbre of the erhu is slowly pulled out in the continuous use, and the regular use of the erhu is a good maintenance and maintenance for the erhu.