As a language subject, Public English for graduate students has certain instrumental and humanistic characteristics. In the process of public English teaching for graduates, it is very necessary to integrate ideological and political elements and give full play to their synergistic effects. This approach can not only improve students' English application and practical operation skills but also enhance their political literacy, thus achieving the true purpose of "cultivating people with virtue." This paper mainly discusses the construction of ideological and political theories teaching in Public English courses for graduate students. In the practical implementation of teaching, it is essential to first clarify the teaching objectives. Then, according to the specific goals, it is very necessary to determine how to integrate English teaching with ideological and political theories teaching, which makes the course teaching more comprehensive and diverse, ultimately improving the effectiveness of education.