文章为了厘清情报工作发展的变化，通过文献计量分析法，分析情报工作内容变化趋势及发展阶段，对不同国家情报工作的发展史进行回溯，以此了解情报工作随着环境变化带来的变革，为相关研究者提供参考。

In order to clarify the changes in the development of intelligence work, this paper analyzes the development stage of intelligence work and research hotspot contents by Bibliometrics, and makes a retrospective study of the development history of intelligence work in different countries, to learn about the changes brought about by the changes in intelligence work with the variation in the environment, so as to provide reference for relevant researchers.