To protect the voice, you can use fat sea water, dandelion, chrysanthemum and other water to drink, fat sea water has the effect of clearing heat from the lungs and throat, dandelion and chrysanthemum have the effect of clearing heat and detoxification (to remove heat and toxicity in the body) and so on. But the Chinese medicine mainly through the role of decoction, soak water to drink may be due to the release of the active ingredients is limited, will affect the efficacy. 1. Fat Hai Hai (胖大海)：It has the effect of clearing lung heat, facilitating throat, detoxifying, moistening the bowels and laxative. It is used for the treatment of dry cough without phlegm, sore throat, mute, hot constipation and other diseases caused by lung dryness and fluid injury. Overdose of this drug can cause paralysis of the respiratory center, cold spleen and stomach (spleen and stomach weakness and cold) diarrhea should be taken with caution. 2. Dandelion: It has the effects of clearing heat and removing toxins, subduing swelling and dispersing knots, diuretic and swelling. It is used in the treatment of eye redness, sore throat, lung carbuncle, feverish drenching (burning and stinging pain evident during urination, accompanied by frequent urination and urgency, and discomfort of traction in the abdomen) and astringent pain. The adverse reactions and contraindications of this drug are not clear. 2. Chrysanthemum: It has the efficacy of dispersing wind-heat and clearing away heat, calming the liver and brightening the eyes, clearing heat and removing toxins. It is used in the treatment of wind-heat and cold, headache and dizziness, redness and swelling of the eyes, blurred vision, canker sores and poisons. The adverse reactions and contraindications of this drug are not clear. The efficacy of the drug to drink water is limited, can not replace the drug treatment, such as throat discomfort, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to develop an appropriate treatment program.