Fishweed is not poisonous and is a traditional Chinese medicine included in the Chinese Pharmacopoeia. Fishweed fresh grass is also known as folded ear root, in many places in the south, in the summer, people commonly used cold fishweed or fishweed boiled soup to eat, so fishweed can not be poisonous. In traditional Chinese medicine, the flavor of fishweed is pungent, cold and cool, mainly to the lung meridian, the efficacy of the main heat detoxification, carbuncle pus, diuretic and diuretic, the specifics are as follows: 1, because fishweed can clear heat and detoxification, so fire and heat due to poisonous evil sores, lumps, can be applied to fishweed treatment. 2, because fishweed can be eliminated carbuncle pus, such as lung heat cough, carbuncle spit pus, can be used to fishweed treatment, like the Pediatric pneumonia high fever, cough, cough sputum, often with the fish grass boiled water, or directly with the compound fish grass combination treatment.3, fish grass can diuretic drenching, like bladder dampness and heat caused by frequent urination, urinary urgency, urinary pain, can also be used to fish grass to boil water, or directly with the fish grass grouping of the treatment. Fishweed because it is cold medicine, some patients with cold spleen and stomach should pay attention to the use of it.