Liudujijing(《六度集經》) is the important classics of Buddhist Scripture. It is reflect the actual language of 2 Century A. D., so, its colloquial character is more strong. The paper explains five words: dengren(等人), zaichan(在產), simi(私密) , jianbo(葌薄), suoyou(所由), and offers new research achievements for Chinese vocabulary history and Chinese large scale reference books.