The present invention belongs to the technical field of medicine, and specifically provides a glucagon-like peptide-1 analog dimer, the dimer is formed by two glucagon-like peptide-1 analog monomers, and the pancreatic Glucagon-like peptide-1 analogue monomer is formed by general formula HAX 1 GTFTSDVSSYLEGQAAKEFIX 2 WLVK X 3 RZ means, where Z is NH2, G, GNH2, ‑GCG, ‑GCA; X 1 For Leu, Pro, Phe, Tyr; X 2 For Ala, Cys; X 3 For Gly, Aib. and when X 2 When it is Ala, Z is ‑GCG, ‑GCA; when X 2 When it is Cys, Z is NH 2 ,G,GNH 2 . The glucagon-like peptide-1 analog dimer provided by the present invention has a long-acting hypoglycemic effect, can improve the compliance of clinical medication, and is highly homologous with endogenous GLP-1 (7-37), which can avoid security risk.