Flower tea is a tea made from the flowers or leaves of plants, and different flower teas have different effects. For example, if you use winter flowers to make tea, it is winter flower tea, which has the effect of relieving cough and resolving phlegm; use peony flowers to make tea, which has the effect of activating blood and regulating menstruation (regulating menstruation by activating blood). Winter Flower is pungent, slightly bitter and warm in nature. It belongs to the lung meridian. It has the effect of moistening the lungs and lowering the qi (moisturizing the lungs, making the upward lung qi descend), relieving cough and resolving phlegm, and is used for new and prolonged cough, wheezing and coughing with much phlegm, coughing up blood through labor, etc. It should be used raw for external cough and roasted for internal cough. It should be used with caution in cases of Yin deficiency cough. Peony flowers taste bitter, light, flat, attributed to the liver meridian. It is used for treating irregular menstruation and abdominal pain. Pregnant women should be cautious. Flowers made of tea and decoction use has some difference, not only the time and temperature is different, but also with different drugs, dosage, so the efficacy is also different. Suggested in the hospital after standardized diagnosis and treatment before use, not blindly self-selected.