In the digital age,information technology promotes the development and in-novation of cultural space form,and virtual cul-tural space is rising day by day.By investigat-ing the status of the virtual cultural space of red archives in comprehensive archives at and above sub-provincial level in China,it is found that the construction of virtual cultural space of red archives has problems such as lack of public participation,insufficient mining of con-tent elements,single form of presentation and lack of interactive communication mode.Based on this,corresponding optimization strat-egies are proposed to empower the construc-tion of the national cultural big data system,promote digitization and intelligence of the digi-tal achievements of red culture,and provide conditions for digital achievements of archival culture to be shared by the people.