With the global economy s developing, enterprises are using Internet to establish their dynamic supply chain s management systems, to adapt to the market s constant changes, to occupy more market share and to reduce the costs of production.

The supply chain dynamic alliance is an important organizational form of realizing agile production and circulation,and is a kind of incomplete market transactions approach based on the informal contract under the conditions of developed information technology and market demand-led.

On the basis of dynamic trust theory,the paper proposes a staggered theoretic model which describes dynamic collaboration trust in supply chain from the view of collaboration relationship,which studies the dynamic dissimilar effect of institution-based trust on collaboration trust and cooperation intention in differential stage.

On the basis of dynamic trust theory,a staggered theoretic model which describes the dynamic collaboration trust in supply chain from the point of collaboration relationship is proposed,the dynamic dissimilar effect of specific asset investment on collaboration trust and cooperation intention in differential phase are studied.

Signaling game of environmental purchasing in ecological supply chain;

The ecological supply chain is the application of sustainable development theory in the area of operations management.

From the point of view of improving customer satisfaction CS, the decision-making optimization of environmental purchasing is studied inecological supply chain ESC .