Contrastive education is an educational method that forms an impact in contrast, arouses awakening in the impact and distinguishes right from wrong in awakening. Generally speaking, when people are in an environment or face a thing for a long time, their thoughts are often in a "dormant" state, paralyzed or numb, and people's observation and vigilance tend to weaken or even fade away, which leads to the phenomenon that they can't recognize the fragrance when they enter Lan Zhi's room for a long time, and there is a lost state of "I don't know the true face of Lushan Mountain, but toward which corner of the mountain". On the contrary, if people can compare this environment with other environments and compare this thing with other things, then they will get a clear and strong impression, their ability to distinguish its advantages and disadvantages will be gradually strengthened, and the clarity and shrewdness of resolution will be higher and higher. Therefore, we say that only comparison can lead to discrimination, only discrimination can lead to choice, and only choice can lead to progress and development.

Contrastive education is also a way to actively create and distinguish between environment and reason. Especially when the educated have problems and make mistakes, they should create an artificial environment and quickly improve their ideological awareness and understanding. In life, things that can be used for reference and comparison can be seen everywhere, and this comparison can be both in front of us and behind us. Whether it is today or yesterday, whether it is modern or modern or ancient, metaphors are like clouds, flexible use, and artificial environment and atmosphere are easy to form.