The invention discloses a long-acting polypeptide analogue and application thereof, the polypeptide analogue can act on a GLP-1
receptor, a
GIP receptor and a Y2
receptor at the same time, and can play the biological activities of GLP-1, GIP and PYY3-36 at the same time; the PYY3-36 GLP-1 has the
treatment effect of GLP-1 on
diabetes mellitus, also has the beneficial effect of GIP on glucose and
lipid metabolism and
appetite inhibition, and also has the beneficial effect of PYY3-36 on
appetite inhibition, so that the PYY3-36 GLP-1 has a synergistic effect on glucose, lipid and
energy metabolism; the application of the compound in preparation of drugs for treating metabolic syndromes, such as diabetes,
obesity and
dyslipidemia, has greater potential in preparation of drugs for treating diseases such as diabetes,
obesity and
dyslipidemia.