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随着现代科学技术的飞速发展,作为科技情报的主要载体——科技文献也随之急剧增加。据国外报导,当前世界每年以不同文字发表的科技文献约有300～400万篇,年平均增长率为7～8%。世界上每天出现三种以上新的科技期刊;每小时出现4～5种新的科技图书、登记15～20件专利;会议录出版量每年可达一万种,而某些尖端领域和新兴学科的文献量增加得更快,如原子能和环境科学每三年就翻一翻。中文科技文献数量也相当可观,仅中文期刊就有4000多种。
With the rapid development of modern science and technology, as the main carrier of scientific and technological information, the scientific literature has also increased dramatically. According to foreign reports, there are about 3 to 4 million scientific and technological documents published in different languages in the world each year, with an average annual growth rate of 7% to 8%. There are three or more new sci-tech periodicals in the world every day; 4 to 5 kinds of new science and technology books occur every hour, 15 to 20 patents are registered; the annual volume of conference proceedings is up to 10,000; while in some cutting-edge fields and emerging disciplines The volume of literature has increased even faster, with atomic energy and environmental science doubled every three years. The number of Chinese scientific literature is also considerable, with over 4,000 Chinese journals alone.