By means of analytic hierarchy model, makes a quantitative and qualitative analysis on the impact factors of college students' learning engagement. Prepared five questionnaires on the basis of the hierarchical structure of the model, and randomly conducted a questionnaire survey among students of Hunan University of Technology. Made hierarchy analysis on the survey data, and the empirical analytical results verified the reliability of the conclusion of the model, i.e. the need for cognition, the relationship between teachers and students and learning motivation are the key factors that influence college students’learning engagement.