His special fields are Lexicology, Semantics, Discourse Analysis, Corpus Linguistics and now he is also specialized in the research and design of extensive Multi-media English teaching packages and distance learning.

• 郑树棠教授主要研究方向为词汇学、语义学、语篇分析和语料库语言学，现在他从事多媒体英语教学课件的研究与设计。