With the iterative innovation of various information technologies，the Internet is showing a trend of evolution to Web 3.0. Web 3.0 focuses on users，emphasizes users’ own autonomy，and uses distributed ledger technology to build Distributed Public Key Infrastructure（DPKI）and a new trusted distributed identity management system. Web 3.0 is a safe and credible value Internet，a new economic system jointly built and shared by users and builders，and a three-dimensional intelligent holographic Internet. As a credible end-to-end value transfer technology，distributed ledger technology will become the cornerstone of the meta universe economic system. In the development of Web 3.0，we should be vigilant against industrial foam，capital speculation and application risks. The innovation and development strategy of Web 3.0 includes distributed infrastructure，well governed technological innovation，common standards，clear and fair tax rules，legal framework for Dao，etc.