This paper first analysis of Agricultural Sciences characteristics,and considers that agricultural database has three features.It also thinks that agriculture sci-tech novelty retrieval database selection criteria should be comprehensive,involving the subject and included the content of the authority;quantitative databases at home and abroad,make full use of free cyber source;at the same time,check the regional,seasonal,practical new task request.Finally,list the common agricultural sci-tech novelty retrieval databases,and taking agricul...