Tsinghua University Library was founded in 19 12, and the building consists of east and west parts. The library has a total construction area of 28,000 square meters and 2,000 reading seats. In recent years, Tsinghua University Library has ordered nearly 50,000 books in Chinese and foreign languages every year. By the end of 20 12, the total collection of Tsinghua University Library was about 4.462 million volumes, forming a comprehensive collection system with natural science and engineering science literature as the main body, humanities and social science and management science literature as well as various types and carriers. In addition to Chinese and foreign books, the collection resources also include: more than 220 thousand ancient books; There are about 560,000 bound volumes of periodicals; Order 3 103 printed periodicals; There are more than 6000 doctoral and master's theses in our school1/kloc-0; 28,000 kinds of micro-movies; 464 databases of various types; More than 65,000 Chinese and foreign full-text electronic journals; There are more than 6.409 million electronic books in Chinese and foreign languages, and about 2.355 million electronic dissertations. The library implements open service and is open continuously every day. WWW, OPAC (Collection Catalogue Search) provides 24-hour external service. In 2003, it received 14 1000 person-times, and the total borrowing volume of Chinese and foreign books was 1 1400.