Disaster is a serious challenge that the mankind is faced with. This paper discusses the clanger of disaster for national economy & human being’s existence It presents an outline of disaster classification with systematic characters and discusses the scientific mechanism of disaster formation. It emphasized the importance of study on multi-subject & general system atization. Besides

it puts forward the proposals concerning disaster research

supervision

defence & their combination with territorial environment remote sensing research

Its purpose is to elaborate geosci-ence theory & remote sensing potential

as well as to promote the study on disaster science and ensure the existence 81 development of human being.