中文摘要：

人们对基于信息技术的企业竞争力提升并由此产生的投资效益提出质疑，针对该问题，本文选择中国企业信息化500强中的上市公司为样本，分析了企业竞争能力和信息化水平之间的关联性。研究发现企业信息化水平能正向地影响其竞争能力，规模越大的企业这种影响表现得越明显，并且这种影响有一定的时滞效应。

英文摘要：

IT productivity paradox and investment ＂black hole＂ made people suspect IT could enhance company＇s competence. To solve the problem, the paper choose the listed Chinese top 500 enterprises of IT level as samples to analyze the relationship between competence and IT level of enterprises. Research finds that company＇ s IT level make a positive impact on the level of competition, and the bigger company＇ s scale is, the more significant the impact is, and this impact will delay. This study could guide Chinese companies to invest information technology.