Moral education in colleges and universities goes through the teaching of all the courses, which integrates into all the links of teaching and practice. In daily teaching, moral education is a kind of implicit education influencing in a imperceptible way. The teaching content of “International Law” includes profound moral education, which can effectively transfer from “ideological and political courses” to “ideological and political theories teaching in all courses”. Therefore, interactive case-based teaching method is a good way to achieve ideological and political teaching in a “silent and soft” way. Through interactive case-based teaching, moral education can be penetrated into the lecturing of professional course knowledge and a series of activities, which can form the course teaching with the integration of “intellectual education” and “moral education”, to integrate the values shaping, knowledge imparting and ability cultivation. In this way, the fundamental task of building morality and cultivating people will be fully implemented.