“75·8”大水的惨痛教训,催生了防汛通信专网的建设。“5·12”汶川大地震,公网通信系统陷入瘫痪,应急通信系统在抗震救灾中发挥的作用为从上到下各级政府所重视,行业应急通信系统发展的机遇不期而至。本文阐述了防汛应急通信系统中使用的相关通信技术。 “75.8 ” painful lesson of the flood, gave birth to the flood control communications network construction. “May 12 ” Wenchuan earthquake, public network communication system paralyzed, the emergency communication system in earthquake relief plays a role for all levels of government from top to bottom attention, the industry’s emergency communications system development opportunities ranging from . This article describes the relevant communication technology used in flood control emergency communication system.