Abstract: The internationalization and digitization of RMB is the significant driving force for China’s high-quality economic development, therefore, it has significant theratical and practical values to study the impact of digital RMB from the perspective of international economy. Based on the dynamic stochastic general equilibrium model of the two countries with the characteristics of the liquidity service and asset service of digital RMB, this paper conducts an analysis of the international economic effect of the issuance and cross-border use of digital RMB. The findings show that the issuance and cross-border use of digital RMB can stabilize domestic economic fluctuations caused by exogenous technical and policy shocks, while strengthening economic and financial ties between China and foreign countries, which is mainly achieved by strengthening the ties between international trade and international finance. The difference in therestrictions on cross-border use of digital RMB has a limited impact on the domestic economy, but has a greater impact on the holdings of digital RMB in foreign countries and the net exports. The stronger the liquidity of digital RMB, the more stable the macroeconomic fluctuation caused by domestic shocks will be, but it may exacerbate international economic fluctuations. The above conclusions suggest that the People’s Bank of China can promote the pilots of cross-border use of digital RMB in a step-by-step and orderly manner, and pay attention to the dynamic adjustment of the cross-border use restrictions and the coordination of international economic policies.

Key words: digital RMB, international economic relationship, dynamic stochastic general equilibrium