The ranking of Japanese universities is the ranking of all universities in Japan. Unlike many other countries, Japan has no official ranking of domestic universities. This is mainly because Japanese universities are divided into national universities and private universities. Japanese national universities focus on academic research, while Japanese private universities focus on social practice. There are obvious differences in styles between the two types of schools, and the comparability is not high. According to statistics from the Ministry of Education, Culture, Sports, Science and Technology, there are 86 national universities, 86 public universities and 603 private universities in Japan, accounting for 779 universities. Because the ranking of world universities mainly depends on the number of papers and citations, national universities that assume the role of research institutions usually rank better in the world. The teaching system of private famous schools is more advanced, and the students trained are of high comprehensive quality, which is very recognized in Japan, so it has great advantages in finding a job. For example, Waseda University and Keio University have very high status in the eyes of the Japanese, unshakable social status and excellent reputation. In the satisfaction survey of their graduates, Zaoqing Shuangxiong ranked in the top three all the year round. There is no official ranking of private universities in Japan. According to the national university rankings and the general impression of Japanese people on universities, it is a comprehensive understanding after combining the academic level and employment level of universities, which can better reflect the grades of universities in the eyes of Japanese people. Japanese folk rankings divide Japanese universities into S-level to F-level. Among them, the S-class university is the best, which is an international super-class university; A-level, followed by this world-class university; Further down are first-class B domestic universities, second-class C domestic universities, second-class D domestic universities, and so on. More than 600 universities are classified as E and F universities. In addition, the university alliance that Japanese universities join is similar to C9 alliance in China, which can reflect which universities in Japan are in the first group.