With the rapid development of Internet,WEBpages increase in exponential progression.How to make inquiries of the tremendous amount of information is a problem which has long aroused interest among people.As a result,lots of search tools are produced.Accoding to search forms,they may be grouped into two types:virtual libraries and search engine,whose proper utilization will make it easy to search for geoscience information.Nevertheless,due to the difference in quality and renewal of frequency among various databases,the adoption of different search forms for the same subject will produce considerably different results.The appropriate use of search functions will effectively reduce the search range and speed up the search work.