1. According to the content of active ingredients, it can be divided into three types: effective monomer extract, standard extract and ratio extract;
2. Divided into glycosides, acids, polyphenols, polysaccharides, terpenes, flavonoids, alkaloids, etc. according to ingredients;
3. According to the product form, it can be divided into vegetable oil, extract, powder, lens, etc.
4. According to usage, plant extracts can be divided into natural pigment products, traditional Chinese medicine extract products, extract products and concentrated products
