Abstract: The network organization of supply chain in clusters provides an important way for organizadons' technology innovation cooperation.It also promotes technology innovation open.This paper analyses the strategy and the profit level of duopoly R&D cooperation and non-cooperative R &D based on a model with one core enterprise and one upstream supplier.The result indicates that increasing investment will increase the competitiveness in the market.The profit of each supply of duopoly R&D cooperation is obviously higher than that of non-cooperative R &D.For duopoly R&D cooperation,each supply chain shall be based on the short-term and the long-term strategic goals to make different decisions.

Key words: supply chain in clusters, technological innovation, game