The university pays attention to the quality of teaching and evaluates the results of student assessment as a certain criterion. Teaching quality is the core of education. Improving the quality of teaching is the primary task of school work. This paper studies the results of teaching assessment of university science and technology students, and draws the main content of students' attention to science and engineering courses. It also improves the teaching ability of science and engineering teachers to enhance teaching quality. First, the variance analysis was used to test the influence of different semesters and teachers' professional titles on students' teaching assessment. There was no significant difference in the results; based on the factor analysis, three factors that students pay attention to when evaluating teachers are obtained; the use of association rules to obtain a high degree of correlation between the three factors is a focus of the student's study science and engineering courses. The science and engineering teachers can use this research result to improve and optimize the teaching behavior and enhance their comprehensive classroom teaching ability. Ultimately improve the quality of teaching.