In the era of mobile Internet, college students can study independently through mobile platforms, and the online and offline mixed classroom has become a new teaching mode.Professional introduction is a basic course for students to recognize the macro structure of professional knowledge system, which plays an irreplaceable leading role in urban and rural planning education.?Under the condition of mixed teaching, it has become an urgent problem that colleges and universities pay more and more attention to exploring the teaching ideas of professional introduction, optimizing the teaching plan, taking students as the center and arousing students' enthusiasm. Article reviews its professional curriculum characteristic, and teaching work, the content of the organization, analyzes the existing problems of online teaching, and then explore the teaching reform measures, mixed teaching, including of changing traditional teaching，clarifying development situation of professional quality,?introducing the measures of professional talent training scheme in our university. And it adopts the whole cycle teaching link and exam standard, optimizing the teaching form and enhancing the interaction of mixed class to promote the development of the mixed course of professional introduction.