The development and application of information technology has greatly promoted progress in society,economy,and science.Today,as mankind is approaching to the 21st century,the research and application of information technology has become more and more important in various fields.It has long been commonly recognized that this technology should be applied to the resources science,and great achievements have been made already.This article gives a brief introduction to the resources information science and technology including its emergence,theoretical base,and application in resources research; and points out resources information science of the 21st century should make comprehensive studies which are closely related with its application.Not only the available resources information technology should be developed,but also the international concerned hot issues be emphasized in advance.Only in this way,can the resources science research be modernized at high speed.