The invention particularly relates to an NMR method for representing the acid-base properties of green solvents, and aims at the defects that the application range is limited, qualitative analysis only can be carried out, quantitative analysis cannot be carried out and the like in combination of methods such as a potentiometric titration method, an ultraviolet-visible (UV-vis) spectrometry Hammettindex method, an infrared probe molecule determination method and the like adopted for determining the acid-base properties of existing solvents. According to the method, a probe molecule used for determining the acidic green solvent and a probe molecule for determining the alkaline green solvent are selected; the probe molecule used for determining the acidic green solvent and the probe moleculeused for determining the alkaline green solvent are added into the acidic and alkaline green solvents to be determined; chemical displacement values of the acidic and alkaline green solvents are determined by using corresponding nuclear magnetic resonance spectroscopy methods; and relative acidic or alkaline strength is obtained by comparing the determined chemical displacement values. The methodis simple in operation, accurate in result and suitable for representing of the acid-base properties of various green solvents.