莊子在宇宙發生論上採用老子的論述架構，突出「氣」這一宇宙元素的介質，本文考察莊子氣化宇宙先秦兩漢的脈絡，介紹述其所形成的魏晉玄學與美學之論述梗概。然後，劉劭《人物志》、嵇康形神論及郭象性份自生的氣稟說等立基點上，銜接曹丕、劉勰對魏晉時代，特別是建安時期的文學評論「文以氣為主」、「慷概任氣」之點評，開展出「氣」概念在魏時代玄學與美學二重奏的理論蘊義。

Zhuang Zi employed Lao Zi’s argumentative framework to construct his theory about the genesis of the universe, highlighting “qi”, the interface of the elements of the universe. The article is made to review the development of Zuang Zi’s Qi-hua (Qi transformation) cosmology in the Pre-Qin Period and the Han Dynasty, describing the guidelines of the resulting Wei and Jin metaphysics and aesthetics. Then on the basis of Liu Shao’s Ren Wu Zhi (Personal Character), Ji Kang’s appearance-sprite theory, and Guo Xiang’s natural-endowment theory, the writer goes on the discus Tsao Pi and Liu Xie’s reviews about the literary criticism of the Wei and Jin Dynasties, especially the one of the Jian An Period-“qi as the main thing in literature” and kangkairenqi-to reveal the theoretical meanings of the concept, “qi”, in the metaphysics and aesthetics of the Wei and Jin Dynasties.