▎ 摘　　要

NOVELTY - device of one embodiment of this utility model claims a cleanliness evaluating graphene, comprising a preheating zone are orderly arranged, and load region and imaging region; the pre-heating area comprises a first heater, the preheating zone for graphene under estimation for preheating, the load region comprises a fumigation part, said loading area for loading the fumigating sample on the surface of the graphene, the imaging area is used is loaded with the graphene collecting image of fumigation sample. The utility model one embodiment of evaluating graphene cleanliness of the device, it can realize non-destructive graphene cleanliness, fast evaluation.