First, by comparing the education of other countries in the world, we can find the defects and deficiencies in China's education, and we can further modify and improve China's education in light of China's national conditions. Only through comparison can we find the problems existing in China's education itself, and only through comparison can we learn from the excellent educational methods of other countries. Without comparison, education in China will stagnate, and there will be no direction and motivation for progress. On the other hand, through comparison, we can also learn from the failure of education in other countries, so as to learn from the lessons of their countries and take them as a warning. At the same time, we can also find the advantages and highlights of education in China, so as to continue to carry forward and adhere to our advantages in education. Really achieve the effect of "taking its essence and removing its dross". I quoted Edmund King's view on the purpose of comparative education. He believes that "all comparative studies in education have a transformative effect (otherwise why compare?" )? This is not specifically about changing someone, but more about opposing our own ideas and opposing what we take for granted in society or professionally. "

Secondly, by comparing the education in different countries, we can find the common law of education development, and we can use this law to grasp and plan the education in China. Education is not a static substance or theory, it changes with the development of the times. Since the founding of People's Republic of China (PRC), China's education system has undergone many reforms and revisions. From the founding of the People's Republic of China to the present, our country's education system has certain development laws, which are not static, but laws to follow. Therefore, we can explore these laws by comparison, and make preparations for educational reform and improvement in advance. Only by grasping the law can comparative education research make a profound and accurate judgment on the development of contemporary education, draw lessons from its development, provide decision-making basis, and contribute to long-term educational planning and educational decision-making.

Third, it can promote educational exchanges and mutual cooperation among countries. In today's era of rapid economic and educational development, there are more and more educational cooperation, and educational cooperation has also been paid attention to. Comparative education can promote this kind of educational exchange and cooperation, and make our country not only a closed feudal society, but also more powerful and open. This highlights the great role of comparative education.