Fetal chrysanthemum is chrysanthemum, which is picked before the flowers are in full bloom, and there is no difference between the two. Fetal chrysanthemum is the best product of Hangzhou white chrysanthemum, because its flowers are not yet in full bloom before picking, therefore, the petals are well preserved and the smell is more intense. Chrysanthemums can be divided into Hangzhou chrysanthemums and Chu chrysanthemums according to their places of origin, and white chrysanthemums and yellow chrysanthemums according to their flower colors. Fetal chrysanthemum is white chrysanthemum, originating from Hangzhou, the best of Hangzhou white chrysanthemum. Chrysanthemum has the effects of dispersing wind-heat, calming the liver and improving eyesight, clearing heat and removing toxins (removing heat and toxins from the body), among which, white chrysanthemum is better at clearing the liver and improving eyesight (clearing the liver fire to promote the recovery of eyesight), and yellow chrysanthemum is better at dispersing wind-heat. However, it should be noted that it should be used with caution for people with Qi deficiency, cold stomach, and reduced appetite and diarrhea. The adverse reactions and contraindications of chrysanthemum are not clear, the drug should be used reasonably under the guidance of a physician.