In the post epidemic context,geopolitical risks have surged in some countries,trade protectionism has risen,the entry threshold for foreign investment has been rising,and there are differences in investment environments,which will increase the potential risks of Chinese enterprises'direct investment in the countries in the RCEP region.Therefore,accurately judging the investment risks of different countries and their dynamic changes in different periods is of great reference value for Chinese enterprises to make direct investment choices in RCEP region countries.This paper adopts the principal component analysis method and selects 31 secondary indicators of political,economic,financial,socio-cultural and China relations risks of RCEP countries during 2013-2021 to measure the country risks of RCEP countries.The findings show that the lowest risk is Singapore and the highest is Myanmar.In recent years,Australia has overtaken Japan as the country with the highest risk in its relations with China.