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.

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

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.

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.

The Discovery of Idle Resource and Market entry;

Market Entry and Network Externalities;

This paper analyzes the reasons of different market entry strategies selected by venture enterprise under intellectual property protection,and then provides the correlations of entry strategy,intellectual property protection and number of venture enterprise.