：文章以中国科学引文数据库（CSCD）收录的2017年发表的期刊论文为基础，抽取621,066条引文记录，并以此构建5个学科门类、68个学科之间的引文网络，据此分析我国理工农医跨学科的知识流动情况。研究揭示自然科学发挥着基础性作用；生物科学、环境科学等学科占据着跨学科交互网络的核心；医药卫生、农业科学皆自成一体；自然科学和工业技术之间联系紧密；自然科学门类下的学科之间的相似度较低，农业科学之间的相似度极高，工业技术之间的相似度适中。

Based on the published journal articles in the Chinese Science Citation Database(CSCD) in 2017, 621,066 citation records were extracted, and two citation networks of five types and 68 disciplines were constructed to analyze the interdisciplinary knowledge flows of sciences and technologies in China. It is revealed that the disciplines of natural science play fundamental roles; that the disciplines of biological sciences and environmental sciences occupy the core of interdisciplinary interaction networks; that the disciplines of medical sciences and agriculture are all self-contained; and that the natural sciences and engineering are closely connected. While the disciplines similarity in natural sciences is low, there is extremely high disciplinary similarity in agriculture, and mid-similarity in engineering and technology.