Obesity is one of the major challenges facing public health in the 21st century. Obesity can induce diabetes, dyslipidemia, hypertension, nonalcoholic fatty liver and a series of chronic metabolic diseases, which seriously affect human health. Brain gut peptide is a double distributed peptide in gastrointestinal tract and brain, which is the material basis of brain gut axis. It regulates the complex functions of gastrointestinal tract through endocrine, neurosecretory and paracrine, and participates in material metabolism. Exercise can regulate the expression of several brain gut peptides (ghrelin, GLP-1, PYY) in peripheral or central nervous system through the changes of nerve, body fluid and endocrine under stress, and then affect the activity of central nervous system, appetite control, energy intake, glucose and lipid metabolism, and play a unique anti-obesity role.