答案:(1) treat and save emergency patients with acute, critical and serious conditions such as shock, coma, respiratory and cardiac arrest, severe arrhythmia, acute vital organ failure;(2) emergency treatment of “three-no” patients (no money, no family members around and no identity certification) referred to by “110”, “120”, “122”or other departments; (3) emergency treatment of the wounded due to major public incidents like traffic accidents or poisoning incidents; (4) other circumstances in which patients with certain conditions should be admitted into “Green Channel”.