Abstract: On the basis of analyzing the extraordinarily serious mine gas explosion accidents in recent years, the paper revealed the features of the serious accide nts of gas explosion induced by the gas emergency events and introduced the weak links on the emergency management of the unexpected events in coal mines. In ord er to enhance the capability of preventing, controlling and reducing the disasters, the particular importance to prevent the secondary disasters induced by the gas outbu rst in outburst mines and the first gas outburst occurred in non outburst coal mines which had no risk of gas outburst before were emphasized and presented.