In order to promote the improvement of the development efficiency of digital culture industry in the future, 20 typical enterprises in five key fields of digital culture industry, including animation, film and television, games, network culture, digital cultural equipment and digital art display, are selected as samples to analyze the operating efficiency from 2018 to 20203 by DEA model.The conclusions are as follows: The comprehensive efficiency of sample enterprises shows a trend of increasing firstly and then decreasing, and invalid enterprises account for a large proportion;Scale efficiency is the main reason that affects the business performance of enterprises in digital culture industry;COVID-19 had a obvious negative impact on industrial development, but the performance of some enterprises has not decreased but increased due to the increased demand for online entertainment during the epidemic period.Countermeasures and suggestions are put forward from four aspects ,including strategic planning, financial support, resource sharing and legal protection, to provide reference for the sustainable development of digital culture industry.