The invention provides a dual agonist peptide of an adiponectin receptor-1 and receptor-2 for treating NAFLD and liver fibrosis, and a pharmaceutical composition comprising the same. The dual agonistpeptide comprises amino acid sequence: P-X2-L-Y-X5-F-X7, wherein at least one of X2, X5 and X7 is unnatural amino acid, P is proline, L is leucine, and Y is tyrosine. The dual agonist peptide of adiponectin receptor-1 and adiponectin receptor-2 in the invention can effectively treat NAFLD and liver fibrosis, and has the advantages of good biological activity, good stability and easy magnificationproduction, low cost, low toxicity, large safety window, and small dosage.