Fishwort for lung cancer is not true. Fishy grass is just a certain relief for lung cancer, and has no obvious therapeutic effect. Fishy grass is a traditional Chinese medicine, which is the fresh whole grass or dried above ground part of Houttuynia cordata, family Sambucus, pungent in nature, slightly cold, and belongs to lung meridian. Fishweed has the effect of removing heat, poison and evil qi from the body, eliminating carbuncle, discharging pus, and improving the problem of dribbling urine, and the problem of small amount of urine not being able to pass. It can be used in the treatment of lung carbuncle spitting pus, phlegm-heat wheezing and coughing, hot diarrhea, carbuncle swelling and sores, but it has no therapeutic effect on lung cancer. Lung cancer is a malignant disease caused by cancerous cells, there is no special effect treatment drug, and the medicinal effect of Fritillariae Cirrhosae is useless for lung cancer, and can not play a therapeutic effect; it only means that some lung cancer patients with phlegm-heat, cough and asthma can try to use Fritillariae Cirrhosae for treatment, which can help to alleviate the symptom. It is suggested that lung cancer patients should go to regular hospitals in time and do not delay their condition by unauthorized treatment.