<p>Gastric inhibitory peptide (GIP) analogues and uses thereof are described. The GIP analogues codes an amino acid sequence shown by the formula of <IMAGE> wherein X is an amino acid residue other than Met, and Y is a) homoserine (inclusive of homoserine-lactone and indicated by a symbol of "Hse"), b) homoserine amide (HseNH2), c) Gly-Lys-Lys-Asn-Asp-Trp-Lys-His-Asn-Ile-Thr-Gln-Hse or d) Gly-Lys-Lys-Asn-Asp-Trp-Lys-His-Asn-Ile-Thr-Gln-HseNH2. Each of the GIP analogues is employed as an effective ingredient for medicines to cure diabetes.</p>
