The paper builds the subjective game model of emergency in supply chain system, and then analyzes the emergency decision-making when supplier and retailer are facing with the emergency attack. If retailer increases the wholesale and retail price differentials, it's belonging to the high-technological product with higher price and lower quantity available, or supplier possesses the abundant additional product ability, the supplier couldn't decrease the quantity available. Once the supplier has to reduce the quantity available, the retailer should rapidly start up the emergency decision-making, where it seeks for the potential supplier to reinforce the quantity available. If the quantity available coming from potential supplier is greater than the reigning supplier in the crisis state, the potential supplier and retailer will get the more marketing profit.