In the context of the continuous improvement of the economic development level of Asian countries，the emergence of disruptive technologies，and the rise of trade protectionism，the worldwide epidemic of the COVID-19 epidemic and the signing of RCEP have become important factors affecting the foreign direct investment decision-making of Japanese multinational companies，thereby accelerating the adjustment of Japanese multinational corporations’ production network in East Asia. Under multiple factors，it has become a trend for Japanese multinational companies to adjust their East Asian production networks.