This paper puts forward five types of principal-agent relationship in constuction projects, and then analyzes the meaning of the moral hazard as well as the psychological motive condition and the information asymmetry condition which lead to the production of the agent s moral hazard in principal-agent relationship.

The principal-agent relationship between supplier and buyer was analyzed on asymmetrical information conditions by which the unobservability of quality level is regarded as that the supplier concealed information from the buyer and,in fact,it is a converse selection problem of t.

According to principal-agent theory, the paper analyzes the principal-agent problems in the agro-machinery outsourcing such as moral hazard and incentive mechanism designing owing to the asymmetric information, and gives the model of principal-agent relationship between the outsourcer and the agricultural machinery service provider.

Supply chain colleague s business relation is a kind of principal-agent relation.

This paper presents the mathematical model of enterprise finance decision under principal-agent relation.

Under the condition of principal-agent,the paper discusses the mechanism of deal costs among supply chain enterprises and puts forward the ways and measures on how to lower the deal costs among the enterprises.

The Principal-Agent Relations in the Family Enterprise;

According to principal-agent theory, this paper adds one new variable and sets up a principal-agent model in the third party logistics between the outsourcer and the logistics service provider and analyzes moral hazard and incentive mechanism designing, which is caused by asymmetric information in the third party logistics.

According to principal-agent theory,the paper analyzes the principal-agent problems in the third party logistics such as moral hazard and incentive mechanism designing owing to the asymmetric information,and gives the model of principal-agent relationship between the outsourcer and the logistics service provider.