<p>In view of burning and explosion dangerous source which exist in explosive and its manufacture, the security quantitative analysis model of the emergency open system based on the burning and explosion dangerous source evaluation method is proposed, and the system security of the emergency open system is analyzed by the burning and explosion dangerous source evaluation method. The analysis results basically show the regulation of the emergency open system security. The model and the proposed research method can provide reference for security study of other aero explosive device system. The feasibility and reliability of burning and explosion dangerous source evaluation of the emergency open system have been heightened. The security quantitative analysis model of emergency open system in virtue of burning and explosion dangerous source evaluation method can be a good method of the choice of the security design of the whole system.</p>