The quality of teaching in university has a great influence on how students learn and develop. Nowadays, studies on teaching strategies are attracting more attention, but practical methods to improve teaching are not common. At the same time, most studies focus on how to improve teaching in theory. Teachers need specific and practical methods to help them improve their teaching. Classroom teaching is one of the more important aspects in higher education. Therefore, this article aims at providing specific implementation methods and recommendations for improving classroom teaching. The authors have introduced a method for improving classroom teaching using the pair teaching strategy. According to feedback from both teachers and students, the authors conclude that pair teaching can not only improve classroom teaching, but it can also increase students’ learning interest, which improves teaching effectiveness. The significance of the study is that the authors provide valuable guidance for improving classroom teaching quality with the pair teaching strategy, and also demonstrate how to apply the pair teaching strategy in the C Programming Language at Beijing Institute of Graphic Communication (BIGC) as a case.