In the teaching practice of continuously promoting the "three comprehensive education" and adhering to the practice of educating people for the Party and the country, the teaching materials of specialized courses are not only the main carrier of imparting professional knowledge, but also the important factors to ensure the high-level ideological and political courses education and comprehensively improve the quality of independent cultivation of talents. In order to realize the full coverage of ideological and political education in colleges and universities, we must attach importance to the quality of ideological and political construction of specialized courses. The ideological and political construction quality of teaching materials used for professional courses refers to the comprehensive reflection of political nature, comprehensiveness, suitability, novelty, and benefit for learning in the process of teaching professional knowledge and related ideological and political content. In this sense, clarifying the quality dimension is helpful to construct the assessment index system for ideological and political construction quality of professional courses, thereby exploring effective ways to improve the ideological and political construction quality of teaching materials. Finally, the ideological and political construction quality of professional marketing courses is enhanced via the "three-step" strategy, which, accordingly, provides an example of improving ideological and political construction of professional courses.