Abstract: At present, the COVID-19 epidemic has an important impact on the international political situation and then, a complex impact on ChinaJapan relations. The epidemic has a positive and negative effect on the world situation and globalization. It has caused a major negative impact on the global hegemon, namely, the United States, and has complicated majorcountry relations and intensified geopolitical games. On the whole, these changes of macro environment have a significant negative impact on China-Japan relations. In the face of the epidemic, there are some shortterm positive factors for ChinaJapan relations. First of all, joint cooperation in fighting COVID19 and emergency response has partly improved the mutual understanding and national sentiment between China and Japan. Second, it has promoted closer cooperation between China and Japan to reinvigorate their economies, which have been hit hard by the epidemic. Third, China and Japan have increased consensus and mutual understanding on the international situation. But at the same time, the epidemic has disrupted exchanges between China and Japan at all levels, seriously disrupting the pace of warming relations between the two countries. In addition, the changes in Japan's strategy under the epidemic have caused frictions and setbacks in China-Japan relations. First of all, the adjustment of Japan's economic security policy has an impact on bilateral economic and trade relations. Secondly, the renewal of Japan's security and defense policy hinders the construction of a constructive security relationship between China and Japan. In this context, China and Japan should take the opportunity of COVID-19 cooperation to improve mutual understanding, promote global governance and regional cooperation, and deepen economic integration, and continue to write a new chapter in China-Japan relations in the new era.

Key words: Covid-19 epidemic, international situation, China-Japan relations, geopolitics, win-win cooperation