Watermelon rind boiled water to drink, has diuretic, thirst quenching, clearing heat to relieve summer heat. Single use of medicine, the effect is limited. It is recommended that people who are unwell seek medical attention in time, comprehensive treatment, so as not to delay the condition. Watermelon rind is cool and sweet in nature, mainly attributed to the heart, bladder and stomach meridians, decoction, research and external use. There are diuretics, thirst quenching, clearing heat and summer effect, the main treatment of summer heat and thirst, urinary shortness, edema, mouth and tongue sores. Cold and dampness in the abundance of people avoid using. Modern research has found that watermelon rind contains total sugar, titratable acid, protein, nitrogen. Tannin, lithium, sodium, calcium and so on. It also contains amino acids: aspartic acid, threonine, serine, glutamic acid, glycine, alanine, cysteine, valine, methionine, isoleucine, lysine, histidine, arginine, proline, with a higher content of glutamic acid and lysine. It is recommended to take watermelon rind in moderation under the guidance of a doctor, do not take it on your own, so as not to delay the condition or produce adverse reactions.