The new round of scientific and technological revolution and industrial transformation have a profound impact on the economy，society and other aspects. Digital technology has a rapid development，wide range of radiation，deep impact，it is becoming a key force to restructure global factor resources，reshape global economic structure and change global competitive pattern. This report provides a statistical analysis of data from 34 species digital technologies and applications published by the Social Sciences Acadmeic Press（China）in 2021. The statistical results show that，according to the subdivision of content，it can be divided into 5 research fields：digital and big data application，intelligence and information，new media integration and development，Internet application. As a whole，the total number of published series，reports and new access shows an increasing trend year by year. The research and creation quality of digital technology and application year books is slightly higher than all year books，but the standardization of publishing needs to be further improved. Through word frequency and knowledge mapping analysis，the report find that the hot topics of digital technology and applications year books focus on “digital economy”“block chain”“media convergence” and “technological innovation” in recent years. Finally，the report puts forward countermeasures such as pay attention to the key and frontier fields of digital technology and application，pay close attention to the development of digital science and technology and the digital dissemination of the contents of the year books，regulate the quality of digital technology and application year books，pay attention to the collection and accumulation of data resources in the field and carry out resource sharing.