1. Full-text tool is a tool to retrieve and obtain full-text information, which mainly refers to the full-text databases in computer retrieval system, including China HowNet and OVID full-text periodical databases.

2. Full-text retrieval tools of library resources: The library is an important institution that provides all kinds of literature resources, and its full-text retrieval tools include bibliographic retrieval system and e-book system. Full-text retrieval tools for academic resources: Full-text retrieval tools for academic resources include various academic search engines and academic databases.