Abstract: With the development of geological survey informatization, the contradiction between the utilization of data and secrecy management in aerial geophysical and RS is becoming increasingly prominent.This paper focuses on secrecy classify, review and summarize the related work in geology, GIS and oceanography, based on the study of classification of Aerial geophysical and RS data and confidentiality regulations, preliminary build up the judge element set of confidentiality, which contains Scale, GIS, Aerial geophysical and RS and the accuracy of space position.And propose the principle of secrecy classify, in order to provide support for sharing of geological data.