月琴是中国一种古老的拨奏弦鸣乐器。由圆形的音箱和短小的琴脖两部分组成。月琴的全长通常为62厘米,音箱直径则长达36.3厘米。月琴的琴脖和音箱边框所用的材料为红木或紫檀木,面板和背板则采用桐木制成,边框是用六块完全相同的木板胶接而成。月琴的音箱内部有两道音梁,支两个音柱。四轴、四弦,每两根弦的音相同,以五度定弦。琴脖和面板上通常设有八个或九个品位。月琴也有二弦、三弦等其它的形制。音域可以达到两个 Yue Qin is an ancient Chinese musical instrument. Consists of a circular speaker and a short piano neck. The total length of the moon piano is usually 62 cm, while the speaker diameter is as long as 36.3 cm. Yue Qin piano neck and speaker border materials used are mahogany or rosewood, panels and back panels are made of Paulownia, the border is made of six identical pieces of wood glued together. Yueqin speakers have two sound beams inside, two Yinzhu. Four-axis, four-string, two strings of the same tone, to five fixed. There are usually eight or nine grades on the neck and the panel. Yueqin also has two strings, three strings and other shapes. The range can reach two