Basing on the game theory of frog singing,we can explain the strategy selection of enterprise technical innovation and propose the strategy of enterprise technical innovation.

A general form of asymmetry game and its ESS;

Based on asymmetric information game and principal-agent theory,by analyzing the forming reasons and connotation relationships of agency costs which occurs during the process of engineering project procurement,this paper gives out the model of best contract and monitor mechanism.

The authors apply method of asymmetric information game to analyze how to make design of mechanism on the basis of existing revenue and cost of bankruptcy, make the company s manager maximize shareholder s wealth through maximizing own effectiveness, thus define the best radio of liabilities.