The purpose of studying medical literature retrieval is to improve personal information literacy. So what is the function of medical literature information retrieval? As long as there are the following points: 1. Enhance the individual's self-study ability and save the time of searching literature information. Nowadays, there are many kinds of literature information, which are huge in quantity and complex in content. Without a set of effective retrieval methods and approaches, it is difficult to obtain useful medical literature information. 2. Make full use of other people's achievements and reduce repeated research and labor. Because science is inherited, many things have been studied by others, and there is no need to repeat the work, learn from it and innovate on this basis. 3. Reduce barriers to communication with the outside world, and enhance information exchange between people in different regions and countries. Due to geographical, linguistic and cultural reasons, it is impossible for us to communicate directly with people from other regions, countries and languages, but how can we eliminate these obstacles through the exchange of literature information? 4. Expand your viability and improve your competitive advantage. Through medical literature information retrieval, we can quickly find useful information for ourselves and digest it, thus shortening the period of accepting new information. Improve your own competitiveness! What the information age needs most is this kind of information ability!