Park Boon-Joo. 1999. The Syntactic Category of Small Clause. Studies in Modern Grammar 16, 181-198. This paper shows briefly some kinds of small clause syntactic categories that is, S category in Chomsky (1981) and Rothestein (1983), S` category in Kitagawa (1985), INFL` category in Homtstein & Lightfoot (1987), IP category and PrP category in Bowerss (1993). Among these I take the PrP category of Bowers (1993) and show the advantages and evidences of this category. The advantages of this category are i) it gives the uniform structural definition to the definition of external argument and predication relation for the SC and main clause. ii) it solves the problem of finding an appropriate dominating node for SC constructions within the framework of X-bar theory. iii) it can make keep the uniform in X` theory. iv) it solves the `as` in SC. And this category has evidences in coordination structure and the positions of adverbs. Finally I try to find Korean small clauses and analyse according to the types of predicates to clarify the syntactic and semantic properties different from English SC. I include these properties and applied PrP category to Korean SC.