Abstract: The complete CDK2 cDNA sequence from Inner Mongolia Cashmere goat testis was cloned in the first time by homology cloning approach combined with RTPCR and RACE technique ( GenBank Accession No. EF035041). The CDK2 cDNA sequence was 1 355 bp length, containing an open reading frame of 894 bp, flanked by 174 bp 5′UTR and 266 bp 3′ UTR, encoding 298 amino acids. The homology of the goat CDK2 cDNA sequence with bovine was 98%.The amino acids sequence of the CDK2 protein shared 100% identity with bovine CDK2 protein. The homology of the Goat CDK2 cDNA sequence and amino acids sequence with the other mammalian CDK2 genes was more than 92% and 93%, respectively, showing that the structure and function of CDK2 gene is highly conservative.