It is the fundamental task of the current higher education to cultivate people with morality, in order to realize the education with the all-staff, all-process and all-around, colleges and universities should carry out ideological and political work throughout the whole process of education and teaching. Combining with the connotation of the mechanism of "Three-wide education" and through the investigation of many universities, this paper elaborates the mode of college students' ideological and political education under the concept of "Three-wide education" from the aspects of perfecting the education through all-staff of "six in one", the education through all-process of "three main lines", and the education through all-around of "three platforms".