The present application belongs to the field of medicine. The present application relates to a GLP-1 polypeptide having GLP-1 receptor agonist activity and the use thereof. The present application further relates to a pharmaceutical composition comprising the GLP-1 polypeptide. In particular, the present application relates to a GLP-1 polypeptide having GLP-1 receptor agonist activity, or a pharmaceutically acceptable salt thereof, characterized in that the GLP-1 polypeptide has a mutation from threonine to proline at the position corresponding to the 13th position of the amino acid sequence of GLP-1.
