“增字解经”是训释时增加了原文本没有的词义的现象，早在唐代为学者们所注意，直至清代王引之在《经义述闻》的通说部分专列“增字解经”部，这个名称被固定下来指称一种训诂弊病。在一分为二看待“增字解经”的前提下，论文通过逐个分析“增字解经”部分所列101例文献，深入讨论王引之“增字解经”说的真正含义，最终总结它对于训诂学发展的历史意义。 论文共分为五部分。绪论部分概括梳理古代、近代、现代“增字解经”说的研究，并提出论文目标；第二章为“增字”内容的句法分类，包括主语、宾语、虚词、单句等；第三章是对“增字解经”的原因分类，从中可以看出古代错误训释的类型；第四章客观归纳了王引之的误判原因；第五章讨论了“增字解经”的实质和王引之的本意，最终总结“增字解经”说的历史影响力，并把101例具体分析和分类放入附录中。

ZengZiJieJing is an exegetical phenomenon that unrelated characters were added into the original texts when annotating Chinese ancient classical works. It was noticed in the Tang Dynasty and has been named in the Qing Dynasty to fixedly refer to a type of exegetical maladies by Wang Yinzhi set up the ZengZiJieJing part in his work called Jing Yi Shu Wen. Under the premise of treating this subject objectively, this paper analyzed all examples listed in the ZengZiJieJing part one by one and pointed out the true connotation of Wang Yinzhi's ZengZiJieJing theory, and finally, its historic significance and limitations. This paper includes five parts. The prolegomenon mainly summarizes researches about ZengZiJieJing in ancient, recent and modern time, and points out the aims of the paper; Chapter 2 is the grammatical classifications to the added contents, like subject, predicate, objects, conjunction, sentence and so on. Chapter 3 is the classifications to ZengZiJieJing’s causes, from which we can see the types of ancient false exegeses; Chapter 4 sums up the reasons of his misjudgments impartially；Chapter 5 discusses ZengZiJieJing’s essence and Wang Yinzhi's original motivation, and finally, concludes its historic significance and effect. In addition, the specific analyses about the 101 examples are placed in the appendix for reference.