Northern Europe is called academic depression, mainly because the Nordic countries attach great importance to the investment and development of education, with rich educational resources and high level of higher education. Universities and research institutions in Nordic countries enjoy a high reputation internationally, and their education systems and teaching quality are also highly praised. The education system in Nordic countries is very advanced, with rich educational resources and high quality. In addition, Nordic countries have invested heavily in scientific research, and the level of scientific research is also very high. Therefore, the Nordic countries have made great achievements in the fields of science and technology and medicine, which is one of the reasons why they are called academic depressions.