The permanent aim of personal economic life is to seek the maximum personal interest and thus leads to immoral behavior.

This paper analyzes the requirements of harmonious society for the financial management of enterprises and points out that benefit maximization for stakeholders should be taken as the goal of financial management,which does not only satisfy the demand of socialist market economy but also promote the construction of harmonious society.

The direct motivation for a merger and acquisition deal is to seek the competitive advantage and profit maximization.

Further,from the point of view of profit maximization behaviors,it analyzes the preference trade field of consumers,merchants and banks.

The profit maximization should confine itself in the legal boundary beyond which the other s interest and the social benefit may be broken.

Therefore,to meet the needs of the interests of the vast majority of people is the common goal of efficiency and fairness.

The prob- lems of harmonious relationship between public interest and personal interest are the key to build a harmonious society.

Accordingly, personal interest prohibits knowledge sharing while personal efficacy promotes knowledge sharing.

In face of the divergent definitions of public interest,it is a must to extract the basic elements and reveal their relationships between public interest,governmental interest and personal interest in order to grasp the gist of public interest.