Abstract: In order to offer guidelines for establishing the eddy current inspection database applicable for the situation of domestic nuclear power units, this paper discussed the database design and implement of eddy current inspection for nuclear power plant steam generator tubes based on ORACLE. Mainly this paper introduced the necessity of establishing the database of eddy current inspection, the approach of database design and implement, and several typical application examples. The thorough structure of eddy current inspection database could be established by utilizing the “The First Normal Form” of database design principles, and the data insertion, updating, deletion and query could be done using SQL Plus tool or client interface written by programming language.