Continuous compression: According to emergency needs, it can provide continuous and uninterrupted chest compressions for patients with cardiac arrest. Through this compression, it increases intrathoracic pressure, directly compresses the heart, promotes blood flow, and restores the patient's heartbeat. The unique demonstration work mode allows operators to achieve professional operation. Applicable for in-hospital use: hospital emergency departments, ward rescues; out-of-hospital use: 120 emergency systems, military first aid, fire rescue systems, mine and other dangerous operations first aid, schools, nursing homes, shopping malls, airports, and any other occasions requiring emergency treatment.