本文以《围城》中出现的语码转换现象为语料,以主体语框架模式理论为理论基础对其进行句法的分析。《围城》中的语码转换都以汉语为主体语,以英语、法语、意大利语为嵌入语,其中以法语为嵌入语共12处,意大利语为2处,英语为65处。句外语码转换19处,句内语码转换60处。其中60处的句内语码转换,有25处是以嵌入语语岛成形的语码转换,有45处是主体语加嵌入语的的混合成形的语码转换。 In this paper, the phenomenon of transliteration of code in Fortress Besieged is taken as a corpus, and syntactic analysis is carried out on the basis of the framework theory of the subject language. Codewords in Fortress Besieged have Chinese as the main body, English, French and Italian as embedding languages, of which 12 are French as embedding, 2 are Italian and 65 are English. Foreign language code conversion 19, the sentence code conversion 60. Among them, 60 sentences are transliterated in sentences, 25 of them are transliterated by embedded island, and 45 are hybrid morphed transliterations of host language and embedded language.