The role of moderate punishment in moral education is obvious. Timely and moderate punishment can help students to establish rule consciousness and self-control ability, cultivate students' self-restraint ability and self-management ability, improve students' moral understanding level, enhance students' moral judgment ability and promote students' moral development. Moderate punishment can also help students correct wrong behavior and cultivate good moral behavior habits. However, moderate punishment is not the only means of punishment, nor is it the ultimate goal. Teachers should give full play to students' initiative in the process of education and teaching, let students experience the role of punishment in self-education, self-management and self-service, and gradually form good behavior habits.