Baicalin is an active ingredient in a class of natural products. It has been found to reduce the accumulation of lipids in cells. In order to study its corresponding protein targets and biological activity mechanisms, the researchers designed probe molecules corresponding to its active ingredients and carried out chemistry. The identification of proteomics found that the protein target corresponding to baicalin was CPT1A, and through subsequent binding experiments, in vitro activity experiments, and animal phenotyping experiments, the mechanism of its CPT1A target was verified, and it was successful. The anti-obesity and anti-steatosis effects of baicalin depend on its interaction with CPT1A.