Fan bones are also very particular about calligraphy and painting folding fans. Fan bones are divided into big bones and small bones. The big bone is also called "big side" and the small bone is also called "heart". Fan bones are generally made of bamboo and wood. High-grade fan bones are made of torreya grandis, Phyllostachys pubescens, Prunus persica, Zizhu, Zhu Fang, mahogany, ebony, Aquilaria Resinatum, Sandalwood, ox bone, ox horn, ivory, tortoise shell, etc.

In the Ming Dynasty, the model bones were mostly plain, and then various decorative techniques such as inlay, inlay, painting, ironing, engraving, engraving and Qi Diao were developed. Among them, the hollowed-out carved fan edges in Ming and Qing Dynasties are the most popular, with patterns such as "Gu Quan" and "Yumen Cave".

Through the creation and development of famous artists in past dynasties, the bamboo carving with big side of fan bone has formed a unique art. The landscapes, flowers, birds, fish, insects, figures, Bo Gu and seal script carved by famous artists are all vivid, unique in composition, fluent in knives and pens and natural in interest. Compared with Fan's paintings and calligraphy, it has high artistic value.