Abstract: Modular teaching is a teaching method that divides a course into independent modules or units and is intended to enable students to systematically learn and understand complex subjects. The paper deeply explores the application of modular teaching in Animal Breeding teaching through introducing and interpreting in detail the design, implementation, and evaluation of the several typical modules. Practice has shown that through modular teaching, students can systematically learn and understand the core concepts and technologies of Animal Breeding and their personalized learning needs are met, the overall learning effectiveness of students and the quality of teaching are improved. This article could provide a reference for teachers in the teaching of the course of livestock breeding.