Codonopsis pilosula, ginger and sweet chrysanthemum can boil water and drink together. Ginger is mild in temperature and pungent in taste. It enters the lung, spleen and stomach meridians, and has the effects of relieving exterior syndrome, dispelling cold, warming and stopping vomiting. Codonopsis pilosula is a tonic medicine, which is flat in nature and sweet in taste, and has the functions of invigorating qi, invigorating spleen and promoting fluid production. Stevia leaf is sweet, cold, lung and stomach meridians. In daily life, it can be mixed with a variety of ingredients to soak in water, but the stevioside content of this food is particularly high, which will produce obvious sweetness after soaking in water. If people put too much in it at a time, it will affect the taste of the soup, and it will also increase the burden on the human body. Therefore, it is the most important taboo to eat Stevia leaf.