Based on the co-word matrix of keywords in dissertations in Chinese journals, this paper uses the factor analysis method to quantitatively reveal the topic distribution reflected by the core topic words in the informa- tion lifecycle domain in China from 2000 to 2009, the connotations of its internal knowledge units and their interrela- tionships. The paper also analyzes the academic status and internal relationships of the knowledge group of informa- tion lifecyele topic with the help of the cluster analysis results and multidimensional knowledge mapping. Finally, the paper uses the strategic coordinate diagram to intuitively reflect the research status and future development tend- ency of each topic domain so as to grasp the panorama of information lifecycle research in recent 10 years from a macroscopic perspective and perfect the understanding of the value and defects of the existing research results.%基于中文期刊论文的关键词共词矩阵，利用因子分析方法定量化地揭示了2000--2009年我国信息生命周期领域核心主题词所反映出的研究主题分布及其内部各知识单元的内涵与相互关系，进而借助聚类分析结果与多维尺度知识图谱剖析了信息生命周期主题知识群的学科地位及内在关联，并采用战略坐标图方法直观反映了各主题领域的研究现状与未来发展趋势，以期从宏观上把握近10年信息生命周期研究的全貌并完善对已有研究成果价值与缺陷的认识。
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