Stone flower is sweet, salty and cold, and has the functions of moistening lung and resolving phlegm, clearing away heat and softening hardness. Li Shizhen, the "sage of medicine" in Ming Dynasty, recorded in his Compendium of Materia Medica: "The function of (cauliflower) is to clear away heat, moisten the lungs, soften and harden diseases, and is used for lung heat, enteritis and dysentery." According to Chinese Pharmacopoeia, the whole algae of Shihua can be used as medicine, which can cure phlegm, gall, enteritis, hemorrhoids, bronchitis and other diseases. It is worth mentioning that Shihua ointment is a wonderful product to relieve summer heat and reduce fire in summer.