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Different from other types of word combinations, lexical bundles are frequency-driven word combinations, which are char-acterized by incomplete structure, yet different functional discourse performance. Lexical bundles are the important building blocks of discourse. Appropriate use of lexical bundles contribute to fluent and accurate written and spoken production. This paper col-lates, analyzes and summaries the literature reviews on lexical bundles both at home and abroad, to point out the present situa-tion and weakness of the research on lexical bundles.