Higher requirements are made for the management of stability control system by Ordinances of Electrical Security Accident Emergency Disposal and Investigation，which makes it clear that load shedding by stability control system is equivalent to the loss of load under faults.The advanced risk management concept is introduced into the stability control system configuration and daily management.The risk assessment index of stability control system is put forward including economic loss，legal liability of electrical security accident and penalty loss.The legal liability of electrical safety accident is converted to an affordable economic loss cost.On this basis，the decision-making method of stability control system configuration and risk management are proposed.The stability control system risk tolerance is characterized by the criterion that the risk cost must be less than the risk transfer price.The optimization algorithm of stability control system risk management is proposed based on the principle that the sum of risk cost and risk transfer cost should be minimum.That the risk management method can greatly reduce the operation risk of power system is verified by an actual power system.