Abstract: Through analyzing and mining the genome-wide sequence of the apple，the Apple Gene Function and Gene Family DataBase（AppleGFDB）provide the classification and phylogenetic analysis of 159 gene families in apple. The database includes a series of information about the genes，including nucleotide or protein sequence，chromosomal location，gene structure，gene ontology（GO），protein conserved domain，interpro，the expression profile，microRNA and related publication. Furthermore，Apple GFDB specially develops a user-interactive platform which provided the researchers a chance to modify annotation of apple genes and submit publication. AppleGFDB was available at http：//www. applegene. org/ or http：//gfdb. sdau. edu. cn/.

Key words: apple, gene function, gene family, database