Abstract: Taking the occurrence mechanism analysis and targeted prevention of dynamic disasters as goal, an interpretation of dynamic disaster mechanism is proposed. Analysis shows that dynamic disaster occurrence can be considered from three levels: stress source, transmission path and release terminal. We propose the dynamic disaster prevention idea of "eliminating source, weakening conduction, strengthening terminal" to find out that the source of stress is the primary condition for the targeted prevention strategies; reasonable and effective softening measures for coal-rock mass can reduce or eliminate the disaster effect on the release terminal; to indentify the accurate timing for the implementation of "eliminating source, weakening conduction, strengthening terminal" and strengthen the terminal support strength as soon as possible, the prevention strategies can be divided into grading design and implementation or modular design which has an alternative implementation characteristics between modules.