▎ 摘　　要

NOVELTY - Optical microscope-based single layer graphene oxide staining visible method comprises taking modified graphite oxide, subjecting to Hummers method, mixing with dispersing liquid or preparing oxidized graphite dispersion liquid and modifying by Hummers method, centrifugal washing to neutral, and dispersing in deionized water; and preparing dyeing agent solution, mixing with product in first step, heating, and ultrasonic or centrifugal treating. USE - Method for optical microscope-based single layer graphene oxide staining visible method (claimed). ADVANTAGE - The dyed molecules are directly adsorbed on the surface of graphene oxide and has markedly different in color and strong color contrast formation. The graphene has excellent light transmittance observed under optical microscope. The method has simple operation and high precision and is cost-effective.