Several mechanisms of gut microbiota acting on the glycolipid metabolism of the host have been revealed, for example, bile acids (BAs) that are modified by the gut microbiota, serving as signaling molecules to target farnesoid X receptor (FXR) and G protein-coupled bile acid receptor-1 (TGR5), were found to promote the secretion of glucagon-like peptide-1 (GLP-1) to maintain glucose homeostasis (5), induce thermogenic genes and inhibit lipogenic genes to inhibit obesity (6). The gene discussed is NR1H4; the disease is obesity disorder.