The COVID-19 has accelerated the global digital revolution. The game of great powers in the field of digital economy is also shifting from competition for scientific research strength to competition for technical standards and international rule-making rights. The digital economy competitiveness pattern between countries is being reconstructed. This report builds an index evaluation system from four aspects：digital infrastructure competitiveness，digital industry competitiveness，digital innovation competitiveness，and digital governance competitiveness to evaluate the digital economy competitiveness of 50 countries. The study found that the United States is the most competitive country in the global digital economy，and it is difficult to be surpassed in the short term. China’s digital economy competitiveness ranks second，with Japan，South Korea and some Western Europe in the second echelon. The digital economy competitiveness of African，South American and Central and Eastern European countries remains weak.The output of digital core technologies，the increase in the penetration rate of digital infrastructure and the competition for the dominance of digital standards are the main factors behind the changes in the competitiveness of the country’s digital economy.