“信号与系统”课程具有内容繁多、概念抽象等特点,学生在学习时常常会感到枯燥,难以理解和掌握。为了提高学生学习该课程的兴趣,增强对知识的理解和掌握,本文提出利用MATLAB软件提供的强大功能辅助“信号与系统”课程的教学和实验,并用实例加以说明,应用在实际教学和实验中的效果良好。 “Signal and System ” course has a variety of content, conceptual abstraction and other characteristics, students often feel boring learning, difficult to understand and grasp. In order to improve students’ interest in learning this course and enhance their understanding and mastery of knowledge, this paper proposes the teaching and experiment of using MATLAB software to provide powerful functions to assist in the course of “Signal and System”, and illustrates it with examples to be used in practical teaching and The effect of the experiment is good.