Watermelon has a good medicinal value, China's ancient medical texts: Compendium of Materia Medica, Materia Medica, Materia Medica Preparation, Rinse Meal is just about to be, collapsed stream method of mind and so on have watermelon into the record; watermelon can be the treatment of heatstroke, summer heat, not urinate, heat disease injury to the Jin, the heart hot and irritable, wind and fire toothache, mouth and tongue sores, sore throat, scalded oedema, flashbacks turn off the gas, gangrene, hepatitis, kidney deficiency and swelling and heart disease, high blood pressure, Hemorrhagic fever and many other diseases, so there is a natural "white tiger soup," the name.