The invention provides a severe disaster prevention system for an underground coal mine driving face. The severe disaster prevention system for the underground coal mine driving face comprises a controller, stress sensors, at least two safety nets covering the section of a whole roadway, and at least one safety curtain capable of being opened and closed. The safety nets are arranged in the excavation roadway at intervals, all the safety nets jointly form a protection face which can cover the cross section of the whole excavation roadway, and the safety curtains are arranged on the side, away from the driving face of the excavation roadway, of the safety nets. The stress sensors are arranged on the safety nets. The controller is electrically connected with the stress sensors. The controller is used for closing the safety curtains when the stress sensors detect that the safety nets are impacted by dropped coal, and the excavation roadway is sealed. When severe coal and gas disasters happen, the safety curtains can be controlled to be closed automatically according to the change of coal rock stress, a multiple coal rock gas blocking system combining the safety curtains with the safety nets is formed, and safety of underground workers is guaranteed.