Provided is a cancer antigen peptide which it is possible to administer as a cancer peptide vaccine to a wide range of cancer patients, without the need for HLA testing, and with no limitation to patients having a specific HLA type. This four CTL epitope-joined peptide is obtained by joining, via linkers, of four CTL epitope peptides selected from a group of CTL epitope peptides derived from a tumor antigen molecule, and which have been reported to have CTL inducibility.