▎ 摘　　要

NOVELTY - one embodiment of the utility model claims a vertical furnace for preparing graphene, comprising a furnace body, a cassette and a heat insulation screen; one end opening of the furnace body is a cylinder, the cylinder comprising a cylinder part and respectively set on two ends of the cylinder part of the top end part and the bottom end part; the opening is set on the bottom end, the top end is provided with an uniform air plate on the air homogenizing plate is provided with multiple vent holes, the furnace body is provided with an air guide pipe, the cylinder air outlet of the guide tube is set on the top end and located between the cylinder top and the homogenizing plate; said wafer is set on the heat shield, said wafer and said heat shield can pass through the opening and out of the furnace body. embodiments of the vertical furnace for preparing graphene of this utility model, it can obtain a graphene film has high quality and good uniformity.