The invention discloses a hydrogen strong exhaust system and a hydrogen strong exhaust method. The hydrogen strong exhaust system comprises a hydrogen sensor arranged at a hydrogen accumulating point inside an automobile and a collector, wherein the collector is connected with a fan through a sealed pipeline, and the hydrogen sensor is used for measuring hydrogen concentration of the hydrogen accumulating point. When the hydrogen concentration exceeds a specified value, the fan is switched on, and the hydrogen passes through the fan from the collector, and is exhausted through an exhaust pipe. Due to the fact that a fuel battery automobile hydrogen strong exhaust system is added, hydrogen at the hydrogen accumulating point is exhausted in a forced mode, the exhausting mode is changed from a passive mode to an active mode, accumulation concentration of the hydrogen is reduced, and safety of usage of hydrogen is effectively ensured.