In 2021，the holding of international exhibitions is facing more severe situation and challenges. At the same time，COVID-19 has also accelerated the exploration and practice of online exhibition. What kind of experience and inspiration does the online holding of international large-scale convention and exhibition activities bring to the development of Beijing’s Convention and exhibition service industry？This paper starts from the international large-scale exhibition and its online development mode，and puts forward countermeasures and suggestions for the high-quality development of Beijing exhibition industry in view of the current situation and problems of Beijing exhibition industry.