Luo Han Guo is generally used as a fruit in medicine, Luo Han Guo skin in water, the function, adverse reactions and contraindications are not clear, it is best to use reasonably under the guidance of a doctor. The Chinese medicine Luo Han Guo refers to the dried fruit of the cucurbit plant Luo Han Guo, this taste sweet, cool, belonging to the lung meridian and large intestine meridian. Luo Han Guo has the effect of laxative, moisturizing the lungs and clearing heat, and facilitating the pharynx and opening the voice. It can be used to treat sore throat and loss of voice, lung-heat and dry cough, and intestinal dryness and constipation. Adverse reactions and contraindications to the use of Luo Han Guo are not clear, and the medicinal effect of water is limited. Feeling unwell should go to the hospital in a timely manner, the use of Luo Han Guo and other medicinal herbs bubble water is best after professional guidance, not self-medication.