Memory is carried out and completed along with the psychological activities of the entire cognitive process. Therefore, the problem of consolidating knowledge and skills cannot be solved in isolation. Students need to have high quality in all aspects of perceiving teaching materials, understanding teaching materials, and applying knowledge. However, the consolidation of specialized organizations is also important, and the two aspects must be combined. In the process of consolidating knowledge and skills, it is necessary to correctly handle the relationship between meaningful memorization and mechanical memorization. Generally speaking, meaning memorization is important, and simple mechanical memorization without understanding should be avoided as much as possible. However, we cannot absolutely oppose meaningful memorization and mechanical memorization. Some knowledge, such as historical eras, foreign language words, etc., require a certain degree of mechanical memorization. Sometimes mechanical memorization can also help promote meaning memorization. The main methods to consolidate knowledge and skills are review and practice. The forms of review and practice should be diverse and varied. Sometimes it is necessary to simply repeat the knowledge and skills that have been learned. But more importantly, it is to use the knowledge you have learned to explain new facts or solve practical problems. This is the most effective way to consolidate old knowledge. In the review, it is also necessary to combine timely review, frequent review and staged review. According to psychology materials, forgetting begins immediately after memorization. Therefore, after teaching new knowledge, it is necessary to review it in time. On the basis of frequent review, concentrated review must be carried out at a certain stage. Focused review can systematize old knowledge, distinguish the main and secondary parts of knowledge, discover internal connections that were not discovered before, and deepen the understanding and consolidation of knowledge. An important condition to ensure the consolidation of knowledge and skills is to provide feedback information through frequent teaching inspections. Understand whether students' knowledge has been consolidated and carry out targeted consolidation work. The implementation of the principle of consolidation also requires teachers to clearly define the scope of teaching materials that need to be memorized, and to teach students purposeful and planned memory methods such as memorization, recognition, and reproduction to develop students' memory abilities.