This paper makes a comparative study on the result of EVA of the three major oil enterprises in China,analyzing the influences of the following factors on EVA: net profits,development and exploration expenditure,interest bearing liabilities,and net assets. Based on the analysis,the authors present the following suggestions for increasing EVA: nurturing financial management concept which centers on value creation,establishing a scientific decisionmaking system on investment;improving the budgeting system which centers on value management,and optimizing enterprise capital structures and so on.