l:50000 regional geological survey is a very important item of fundamental geological work and a hard task as China is a very large country. In the past few years, remote sensing technology played an active role in speeding up 1:50000 regional geological survey and more experience has been accumulated. In order to meet the new requirement of geoscience development and the urgent need of national economy and construction, to improve the quality of and speed up the 1:50000 regional geological investigation, remote sensing technology must be spread in an all-round way. Further bringing the unique technology into full play and combining it with other new technology and methods, remote sensing technology will make new contribution to the strategic task of 1:50000 regional geological survey in this century under the new working procedure.