The unique way of system vicissitude and the basic environment of China’s stock market established the role of implicit guarantor by Chinese government, which initiated and strengthened a series of market game between government and investors, listed companies, state-owned enterprises, securities companies.

The paper puts forward a viewpoint about how to choice the market game strategies according to the core competencies.

Assuming that expenditures are made prior to bidding and are not known by rival bidders,a market game model with expenditures prior to bidding is constructed.

On the basis of the theory a model of firm s optimal strategy in Nash equilibrium condition of market games is constructed.

In order to analyze supply chain structure,cost model of firms in market entry game was developed by borrowing Cournot competitive model and Newsvendor problem model,the feasible and equilibrium structures of two-tier supply chain were analyzed and solved in theory.

This paper analyzes the conditions when the informed trader can make use of the private information and its optimal times underlying the framework of the strategic market game.

With this generalized definition of hybrid equilibrium,a general form of hybrid equilibria in job_market signaling games is obstained.