Licorice belongs to the same source of medicine and food, licorice and rock sugar in water to drink the efficacy of moistening the lungs to relieve coughs, clearing away heat and detoxification (clearing away heat and toxicity in the body), etc., mainly because of which licorice plays a role, but the role is limited. Licorice has the effect of benefiting the qi and tonifying the middle, moistening the lungs and relieving cough, clearing heat and removing toxins, and relieving pain (relieving more urgent pain symptoms). It is used for treating spleen deficiency and tiredness, heart deficiency and palpitation, cough and asthma, carbuncle and gangrene (which is a kind of poisonous sores, acute suppurative disease occurring on the surface of the body, limbs, and internal organs) and laryngeal paralysis (pharynx that is red, swollen, painful, or dry, with a foreign body sensation, or itchy and uncomfortable, with difficulty in swallowing). Licorice should not be taken by those who have chest and abdominal distension and vomiting due to the prevalence of dampness. Licorice should not be used in combination with seaweed, halibut, glycyrrhiza glabra and coriander. Rock sugar is rich in nutrients, containing carbohydrates, water, ash, calcium, potassium and other nutrients, which can replenish the body with the required nutrients. The effective dose of licorice and rock sugar in water is limited and generally cannot achieve a therapeutic effect; if there is any discomfort after drinking the water, it is recommended to stop using it and seek medical attention in time.