A passenger emergency evacuation system of a suspension-type monorail transit train can enable passengers to rapidly evacuate from compartments when emergency conditions or accidents occur and safely land on the ground or an evacuation platform. The passenger emergency evacuation system comprises a train body, an escape platform, train body escape exits, rapid-lowering devices and personnel auxiliary lowering devices. The escape platform is stored at the bottom of the train body through a releasing device. The train body escape exits are formed in the bottom of the train body, the rapid-lowering devices are fixedly arranged inside the train body, and the lower ends of traction ropes of the rapid-lowering devices are fixedly connected with the escape platform. The personnel auxiliary lowering devices are arranged between the train body and the escape platform.