The invention provides a rice taste distinguishing and characterizing method. The method comprises the following steps: measuring each kind of rice by virtue of an electrochemical measurement method in a three-electrode system, and preprocessing the measured data; calculating rice taste distinguishing and characterizing values I and rice taste distinguishing and characterizing values II by utilizing the preprocessed data; and finally, determining characterization points of the rice by virtue of the rice taste distinguishing and characterizing values I and II of each kind of rice, and drawing the characterization points of all the rice into a rice taste distinguishing and characterizing diagram, wherein the higher the rice taste distinguishing and characterizing value II is, the higher therice taste quality is, and when the rice taste distinguishing and characterizing values II of corresponding rice are close to one another, rice with higher rice taste distinguishing and characterizingvalues I has higher taste quality. According to the method disclosed by the invention, secondary distinguishing is performed by virtue of the rice taste distinguishing and characterizing values I onthe basis of distinguishing and characterizing the rice taste quality based on the rice taste distinguishing and characterizing values II, so that the distinguishing and characterizing accuracy of therice taste quality is improved, and the distinguishing and characterizing diagram can intuitively show the rice taste quality conditions.