Folding ear root as a medicinal herb is known as fishweed, in general, if eaten correctly, this medicine usually does not bring bad to the human body; however, if a large amount of consumption, may cause gastrointestinal discomfort. The bad side of eating fishy grass, mainly in the improper use of medicine, this drug has a certain degree of cold, a large number of consumption may cause gastric discomfort, this phenomenon is especially obvious in the cold syndrome. However, if the patient can correctly consume fishweed, usually is not bad for the body. Fishweed into the lung meridian, have eliminated carbuncle pus (eliminating carbuncle, discharge pus), diuretic (improve urinary dribbling, urinary volume is not the problem), clearing heat and detoxification (clearing the body of heat and toxicity) effect, can be used for carbuncle pus, phlegm fever, wheezing and coughing, heat (burning stinging pain in the urine is obvious, accompanied by urinary frequency and urgency, abdominal traction discomfort) hot dysentery, carbuncle sores and other diseases. In order to avoid improper use of medication to harm the body, patients need to strictly follow the doctor’s instructions to use the fritillary.