The invention discloses a method for identifying properties of reservoir fluid by three-dimensional quantitative fluorescence parameter charts. The method includes the steps of based on tested sidewall core quantitative fluorescence analysis data, establishing an interpretation chart, where the properties of the reservoir fluid are identified through three-dimensional quantitative fluorescence parameters, in a two-dimensional space composed of oiliness indexes and comparison grades; collecting samples to be identified, and analyzing the samples to obtain three-dimensional quantitative fluorescence spectrogram data of the samples to be identified; projecting the oiliness indexes and the comparison grades in the obtained three-dimensional quantitative fluorescence spectrogram data to the interpretation chart, where the properties of the reservoir fluid are identified through three-dimensional quantitative fluorescence parameters; judging the properties of the reservoir fluid according to an area of projection points. After the method is applied to Bohai Oilfield, interpretation coincidence rate reaches 89.5%, and the level and coincidence rate of comprehensive interpretation for fluid properties on a logging site are greatly increased. The method is simple and practical, is easy to operate, allows timely judgment, and has great application and popularization prospects.