Discrete Mathematics is the theoretical basis of information science and technology, and it is a mathematics that solves problems with arithmetic, algebra and algorithms.The course teaches the main content of discrete mathematics and its application in a simple way, so that students can master the principles, methods and techniques of discrete mathematics, and provide the necessary discrete mathematics tools for the follow-up courses of information electronics and communication.The main contents include collections, relations, functions, algebra and groups, lattices and Boolean algebra, graph theory and mathematical logic.