The word "disaster" refers to a sudden environmental megaevolution which causes casualties, property loss and ecological damage. Disaster is defined by the WHO as an event that causes facility damage, human casualties, worsening conditions of health and sanitation, while the damage scale is beyond the control of local community and external aid is necessary. Disaster medicine is a branch subject of medicine which provides emergency medical rescue and health care service to affected people involved in disaster. Disaster medicine has a lot of medical management and organization content, and it is closely related to emergency medicine. When there is a major disaster, it is also closely related to humanitarian medicine. Hence, disaster medicine is a newly comprehensive and cutting edge discipline. Language: en