For teachers, educational justice is a problem of treating others and themselves properly. Being fair to others and themselves requires teachers to have a broad mind and a high sense of mission, as well as a certain degree of self-control and the courage to resist pressure and be fair. Justice seems to be an easy-to-realize moral principle, but in fact, it is difficult for people without a deep understanding of the significance of education or a sense of mission, selfless dedication and a higher standard of living to fully realize the principle of justice. There are some subtle differences between "fairness" and "honesty" in the meaning of justice. The former refers to a bowl of water that is even to both people and themselves, while the latter refers to a person's vicious and upright quality. It is difficult for a selfish or biased teacher to be fair in education. A wise teacher who can't stick to the truth can hardly achieve real educational justice. To achieve educational equity, teachers are first required to be fair people. Therefore, teachers' moral and spiritual cultivation is very important.