The invention discloses a method of final grade prediction and teaching evaluation based on students' objective behavioral representation. The method comprises the following steps: From the beginningof signing in before class to the end of submitting homework after class, each student's feedback quantity before class, feedback quantity in class and feedback quantity after class are calculated inturn, and the weight coefficients of feedback quantity before class, during class and after class are determined according to the statistical data of many courses in the past years, and the final grade of each lesson of the new course in the new semester is predicted by using the weight coefficients. As that sign-in time of each class is normalized, Mobile phone power, mobile phone traffic consumption, Listening position, PPT teaching content, After-class homework completion degree, combined with weighted coefficient to predict final grade, considering the various stages of the learning process: pre-class, in-class, after-class, respectively, combined with the calculation of pre-class feedback, in-class feedback and after-class feedback to predict final grade, comprehensive reflection of students' classroom learning behavior, can effectively improve the scientific and accuracy of teaching evaluation.