▎ 摘　　要

NOVELTY - The utility model claims a graphene electrochemical electrode, comprising substrate electrode, substrate electrode comprises a cylinder part and a cylinder part extends downwards to form a conical part; the tip of the conical circumference away from the cylinder part; surface of the substrate electrode is coated with nanometre gold film whose thickness is 0.8-1.2 mm, the surface circumference of the nanometer gold film with graphene composite film. The base electrode of the utility model is composed of a cylindrical part and a conical, conical with a tip, tip size graphene electrochemical electrode is very small, the structure is suitable for the micro droplets in real detection of nanometre gold has large specific surface area, high biological compatibility, so it can help to steady and fast biological detection.