The correct way to use miller’s weed is to take it in water, pound it into a compress, or make a decoction to fumigate it. Infusion is not its correct use. The active ingredients in the water are limited and generally do not achieve the therapeutic effect. Mopan grass is a kind of traditional Chinese medicine, sweet taste, light, cool nature, into the lung, kidney two meridians. It has the efficacy of dispersing wind and clearing heat, expelling phlegm and inducing diuresis, and is used to treat colds, fever, diarrhea, cough, otitis media, deafness, pharyngitis, mumps, urinary tract infections, sores, carbuncles, swollen toxins, bruises, and so on. The adverse reactions and contraindications of Mopanchu are not clear. It should be noted that pregnant women should be cautious to take. Patients who are not feeling well are advised to consult a doctor in time to avoid delaying their condition. If you need to use medication, it is recommended to use under the guidance of a traditional Chinese medicine practitioner, unauthorized use of medication may cause adverse consequences.