外来词素是指源于外族语言,经过汉语改造的相对独立的最小音义结合体。也是汉语词素丰富自身的重要来源之一。该文对外来词从构词单位的角度进行分析,即将外来词按照其基本类型进行词素分析。进而归纳出外来词素的类型:单音节外来词素和多音节外来词素(语音形式方面),汉字型外来词素和字母型外来词素(书写形式方面),衍生性和非衍生性外来词素(构词能力方面)。 Foreign morphemes refer to the relatively independent minimum semantic combination derived from the foreign languages ​​and transformed through Chinese. It is also one of the important sources of Chinese morpheme enrichment itself. In this paper, loanwords are analyzed from the perspective of word-formation units, that is, lexemes are analyzed according to their basic types. Furthermore, we summarize the types of foreign morphemes: monosyllabic foreign morphemes and polysyllabic foreign morphemes (phonetic forms), Chinese alien morphemes and alphanumeric alphanumeric characters (in written form), and derivative and non-derivative foreign morphemes aspect).