Based on theory of behavioral and psychological science,people are prone to be overconfident because of self -attribution bias (SAB)when facing a serie of successes.Based on China 's listed corporate data during 2001 —201 3,due to managerial SAB,we find that overinvestment firms overinvest more when high past performance exists;moreover,the overinvestment levels are high in the firms with 2 -year -least consistent high performance,especially 3 years consistent ones.At last,our study provides evidence that the present corporate government in China can reduce but not remove this relationship between consistency of high performance and overinvestment.Our suggestion is that top executives should notice SAB in decision -making when facing past consistent successes.%根据行为和心理科学理论，当面对连续的成功时，人类倾向于将成功进行自我归因而导致过度自信。基于中国上市公司2001—2013年的数据发现，由于自我归因偏差，投资前存在高业绩的过度投资企业具有更高的过度投资水平；进一步，投资前存在至少2年持续高业绩的过度投资样本，过度投资程度更加严重，其中，高业绩持续3年及以上样本的过度投资扭曲程度最为严重。中国现有的公司治理机制，无法彻底消除这种相关性。由此建议，在面对连续的成功时，高管于公司重大决策前需要注意自我归因偏差的影响。
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