The present invention provides Foxp3 peptides comprising the amino acid sequence of SEQ ID NOs: 3-5, 7-9, 12, 15-19, 22, 24, 27-30, 37, 67 or 74, and Foxp3 peptides comprising the above-mentioned amino acid sequences in which 1, 2, or several amino acids are substituted or added, and having cytotoxic T cell inducibility, and also provides drugs for regulating regulatory T cells comprising these Foxp3 peptides. The Foxp3 peptides of this invention find use as vaccines.
