A prerequisite course means that in order to enter a course, you must first complete the specified prerequisite course. Its purpose is to ensure that students have mastered the necessary basic knowledge and can better understand the contents of subsequent advanced courses. Preparatory courses usually include some key concepts, skills and tools, which students need to master skillfully in order to be more confident in subsequent studies.

Prerequisite courses usually require students to complete before choosing courses. If students fail to complete the prerequisite courses, they will not be able to register for higher-level courses. In addition, some students may not have completed the course, but they can still join the course, but they may encounter difficulties in the learning process. Without the basic knowledge of the course, the learning effect may be affected.

Preparatory courses are common in universities, technical colleges, vocational training and vocational certification, and are the basis for students and employees to obtain deeper and higher quality education and training. Good prerequisite courses can make students better adapt to future learning tasks and career challenges, which is conducive to promoting the improvement of training quality and personal knowledge and skills. Therefore, preparatory courses play a very important role in modern education.