Leaf under the pearl is a kind of traditional Chinese medicine, has the effect of clearing heat and diuresis, clearing the liver and brightening the eyes, can be used for the treatment of edema, diarrhea, insect and snake bites and other diseases, usually can be decocted and used internally, but also can be pounded and used externally. Leaf under the pearl source for the Euphorbiaceae plant leaf under the pearl’s dried grass, also known as pearl grass, its taste sweet, slightly bitter, slightly cold, with heat diuretic, clearing the liver and brightening the efficacy of liver fever, red eye swelling pain, carbuncle and swollen sores, diarrhea, dysentery, edema, hot shower (burning stinging pain in the urine, with urinary frequency, urgency, abdominal traction discomfort), jaundice, and insect and snake bites and other conditions. In addition to the decoction of the leaf in addition to the use of internal use, can also be appropriate amount of pounding external use, the specific use should also be carried out under the guidance of a physician, it is not recommended to blindly use on their own.