Peptide refers to a compound with less than 100 amino acids linked twice through a peptide bond, and its relative molecular mass is less than 10,000. Polypeptide drugs are used in the treatment of tumors, diabetes, cardiovascular diseases, osteoporosis, gastrointestinal diseases, and central nervous system. , System diseases, immune diseases, antiviral, antibacterial, etc. have significant effects. There are more than 80 GMP peptide drugs approved for marketing globally, including 17 anti-tumor drugs, 7 diabetes treatment drugs, 16 infection and immunotherapy drugs, and 9 vascular and urinary system drugs. Here are the peptides for the treatment of diabetes: