中文摘要：

为全面探索我国企业IT投资成长模式及中关差异，为我国政府制定信息化政策提供参考依据。以IT产品价格变化为技术进步的替代变量，结合技术扩散模型，分析我国294家企业1982—2008年IS建设历史数据。结果表明：我国企业IT投资受到技术进步的显著影响，与美国相比其年增长率较高，“S”型曲线极值出现得较晚，后发优势、信息技术进步和经济的高速增长是造成中美差异的主要原因。

英文摘要：

The paper explores the growth model of information technology （IT） investment of Chinese enterprises and compares with the USA. It provides references for the government making informationization policies. It uses IT product price changes instead of technical progress, analyzes 294 enterprises＇ data of information systems （IS） construction in China combined with technology diffusion model. It finds the IT investment growth of Chinese enterprises is impacted by technology progress. Compared with the USA, its annual growth rate higher, the extreme value of S-shaped curve also appeared later. The main reasons of the differences are advantage of backwardness, the rapid economic growth and the development of IT.