Abstract: The current teaching of A nimal Immunology has some problems in the aspects of paying more attentions to the theory, teaching and the deviation between theory and practice. Case teaching was the link between theory and practice, which enabled students to shift from recipients to participants in the learning process, increase the learning interest, cultivating the ability to analyze and solve problems. Therefore ,the case teaching was an effective teaching method of Animal Immunology. In the implementation process of case teaching, writing cases was the key point and their organization and implementation were important.