crocin (crocin), also known as crocin, crocin, is a series of ester glycosides formed by the combination of crocin, a water-soluble carotenoid compound of saffron, and different sugars, and is one of the main active ingredients of saffron. Including crocin 1, crocin 2, crocin -3, crocin -4 and crocin acid, it has pharmacological effects such as central antihypertension, prevention and treatment of atherosclerosis, anti-thrombosis, anti-platelet aggregation, anti-myocardial ischemia, anti-inflammation, treatment of soft tissue injury, gallbladder and liver protection, anti-tumor, etc. It has been widely used in food, pharmaceutical, chemical and other industries. It is widely used in the treatment of cardiovascular disease and fatty liver