本文运用CiteSpace对WoS核心合集中2000-2020年语言学类别的重叠研究进行梳理，发现重叠研究集中在三个范畴：重叠的本质、重叠的功能、重叠的语义。本文试图通过对关键词的定量分析，探讨重叠研究的现状、热点以及未来发展趋势，把握重叠研究动向。

This paper uses CiteSpace to sort out the overlapping studies of linguistic categories in the WoS core collection from 2000 to 2020, and finds that the overlapping studies focus on three categories: overlapping nature, overlapping functions, and overlapping semantics. Through the quantitative analysis of keywords, this paper attempts to discuss the current status, hot spots and future development trends of overlapping research, and grasp the trend of overlapping research.