Abstract: People's reputation will exert an important influence on people's behavior.For the pioneering entrepreneurs,the influence of reputation is particularly important.But in some state-owned enterprises of our country,there are some entrepreneurs with good reputation,who become the economic criminals when they are close to retiring.This kind of phenomenon is called "the phenomenon of the age of 50".This paper attempts to analyze this question with the reputation theory,and expects to know and take precautions against this kind of phenomenon from the origin.