▎ 摘　　要

NOVELTY - The method involves forming a photoresist on a surface of a diaphragm. A patterned photoreist is sequentially obtained. A metal layer is located on the patterned photo-receiving. A graphene oxide layer is formed on the metal layer. The metal layer located in a channel is formed with a metal line (70). The graphene oxide line located in the channel is reduced into a graphene oxide circuit. Multiple voice coil intervals are obtained. The gap between two adjacent voice coil circuits is 8-20 millimeter. USE - Method for preparing a vibrating element of a sound generating device (claimed). ADVANTAGE - The method provides a vibrating element with small gap between two adjacent voice coil lines. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of the sound generating device. 10Vibrating diaphragm 70Metal line 80Reducing graphene oxide circuit 90Voice coil circuit 100Vibrating element