期刊文献是与时代同步的连续出版物，是记载科学知识、传播知识信息和研究成果的主要文献。它具有出版周期短、速度快、内容新、情报含量大、流通范围广等特点。随着我国科技和经济的迅速发展，期刊的品种和数量在不断增加。然而，最近几年，由于期刊逐年涨价（中文期刊每年涨 Periodical literature is a serial publication that is in pace with the times. It is the main document that records scientific knowledge, disseminates knowledge information and research results. It has the characteristics of short publication period, fast speed, new content, large information content and wide circulation. With the rapid development of science and economy in our country, the variety and quantity of periodicals are increasing. However, in recent years, due to the year by year price journals (Chinese journals are up every year