Fifth China Digital Reading conference issued by the " White Paper on Digital Reading in China 2018", it fully presents the digital reading development status and future development trend in China 2018 from the policy, industry and trends three aspects. Library is the most important institution to carry out social reading, and the library circle in China has been using reading promotion as the main work since 2006. The analysis of this white paper can give enlightenment to the function orientation, transformation change and the adjustment of reading promotion strategy of the library in China.