The harm of drinking chrysanthemum in water is not so much as 6 in real life, but in general there are possible hazards, commonly in the following 3 kinds: 1, damage Yang Qi: Chinese medicine believes that people need the support of Yang Qi for normal survival, and chrysanthemum is cold, long-term drinking chrysanthemum tea may damage the Yang Qi in the body, which may cause discomfort; 2, gastrointestinal discomfort: chrysanthemum tea usually has the effect of removing fire and heat. For patients with cold stomach, spleen and blood deficiency, it is usually not suitable for making water to drink, which may cause acid reflux, stomach pain, diarrhea and other discomfort; 3, allergies: for patients who have had conjunctivitis with kusari fever or are allergic to the components of chrysanthemum, they need to pay special attention when drinking chrysanthemum, which can easily trigger an allergic reaction in the body. Chrysanthemum tea has the efficacy of clearing the liver, brightening the eyes, dispelling wind, removing heat, detoxifying and anti-inflammatory, etc. It has a significant effect on dilating blood vessels and relieving acne caused by internal heat in the clinic. However, for patients who want to drink water with chrysanthemum, it is recommended to determine their own constitution before deciding whether to drink chrysanthemum tea.