In the era of all media, colleges and universities must pay attention to the ideological and political education of students, guide students to establish correct three views, and make ideological preparations for students to enter the society and realize the value of life in the future. However, how to carry out the work of ideological and political construction in colleges and universities in the era of all media, and how to use the Internet to do a good job in the "third classroom" of students' ideological and political teaching has become a difficult problem for ideological and political teachers in major colleges and universities. This paper analyzes the concept and characteristics of all media and combines the influence of all media background on the reform of ideological and political education in colleges and universities, and studies the innovative path of ideological and political education reform in colleges and universities under the background of all media.