It is intended to provide an IgE peptide vaccine that can be used in the prevention or treatment of allergic diseases in animals other than mice, such as humans or dogs. The present invention provides a peptide consisting of (i) the amino acid sequence represented by SEQ ID NO: 28, or (ii) an amino acid sequence consisting of at least 10 consecutive amino acids in the amino acid sequence represented by SEQ ID NO: 28, wherein the peptide, when administered to an animal, is capable of specifically binding to a CH3 region in an IgE antibody of the animal and thereby blocking the binding of the IgE antibody to an IgE receptor.
