王廷相，字子衡，號浚川，別號河濱丈人，生於明憲宗成化十年，卒於明世宗嘉靖二十三年，享年七十一歲。在世期間，由於長年在朝為官，又稟其原則，故在政治上頗有建樹。思想方面，由於王廷相所處世代正是明朝由盛轉衰、內憂外患層出不窮的時代，因此他的思想重心乃在於治世、以期達到使人民相生、相安、相久的目的，這三項準則可以說是王廷相整體思想的出發點，順此他撰寫了《慎言》1。《慎言》之核心大義，乃為：「義守中正，不惑非道」，其內容有十三篇，分別針對不同的哲學問題進行探究與分析，透過對這些問題的解析，也構成了王廷相的思想體系。此次以《慎言．道體篇》為主要研究對象，＜道體篇＞是王廷相《慎言》十三篇章中最為重要的創作之一，其內容主要在於闡述其存有論思想。本篇章節一方面透過「太極」、「太虛」等概念，奠定元氣在創化萬物歷程中的首要地位，另一方面，基於氣化之實然層面上，提出「氣種」說明萬物之殊別的內在原因。筆者希望透過對於此一篇章的解析，並結合王廷相著作中其他的相關解釋，能將其存有論思想內涵完整呈顯出來。

Wang Ting-Xiang(1474-1544) was a Chinese philosopher and politician in the middle-behind Ming Dynasty. When alive, he had rather obvious achievement in politics for contributing the administrative principle, in fields of his thought was focus on the issue of managing the national economy and the people's livelihood. By way to access the benefit for people, he wrote the book “Caution” to explore many questions about ontology, cosmology, epistemology and ethic, and these works were also consists of his thought. This paper attempts to research Wang Ting-Xiang’s ontology, in using some concepts like tai ji, tai xu and qi, simultaneously explaining the essential cause of species by seed of qi.