The efficacy of drinking maitake and rhubarb in water is to nourish yin, clear away heat and reduce fire, and clear the heart and remove vexation (to remove vexation and heat from the heart), and so on. However, the effective dosage of Chinese medicine in water is limited, it is difficult to achieve the therapeutic effect, it is recommended to follow the doctor’s instructions to standardize the use of medication. Ophiopogon is a Yin tonic, with the effect of nourishing Yin and generating fluids, moistening the lungs and clearing the heart, treating lung dryness and coughing, coughing with deficiency of Yin, paralysis of the throat (redness, swelling and pain in the pharynx, dryness, a feeling of a foreign body, or itchy discomfort in the pharynx and difficulty in swallowing), sore throat, thirst with injury to the fluids, thirst with internal heat (fever accompanied by symptoms such as overeating, excessive drinking, excessive urination, etc.), insomnia with heartburn and constipation with dryness of the intestines. Rhubarb is an attacking herb with the effects of diarrhea, clearing heat and fire (removing heat and fire from the body), cooling the blood and detoxifying the toxin (treating blood-heat and toxins), expelling blood stasis and clearing the meridians, and inducing diuresis to relieve dampness and yellowish coloration. It is used in treating stagnant constipation, epistaxis (vomiting of blood and nosebleed due to blood-heat), and evidence of blood stasis. Rhubarb is very strong in nature and is only suitable for solid cases, so it should not be taken on its own. Maitong and rhubarb in water has the effect of nourishing yin, clearing heat and fire, clearing the mind and removing vexation, moistening the intestines and relaxing the bowels, and generating fluids to quench thirst (promoting the production of fluids to relieve thirst). It can improve and relieve symptoms such as insomnia, yin deficiency, thirst, and constipation. If Maitong and Rhubarb are used, it should be taken under medical supervision.