Firstly, the paper analyzes the competitiveness factors of cloud outsourcing service providers from two perspectives of both static and dynamic, it is important for responsing to external change of brutal competition in the market. And it proposes the dynamic evaluation model of cloud outsourcing service providers competitiveness and selection methods. The cooperative behavior among outsourcers is simulated by using netlogo to analyze supplier competitive changes characteristics and environmental constraints, it helps cloud outsourcing service providers to improve their competitiveness, and it provides a reference in the long-term viability of emerging industries.