Hairy mulberry herb named Cang Er Zi has the effect of dispersing wind-cold, dispelling wind-dampness, and clearing the nasal orifices. It can improve wind-cold headache, congested nose, nasal abyss (mainly manifested as obscene nasal mucus, the amount of which cannot be wiped clean), nasal congestion and runny nose, rubella itching, dampness paralysis and constriction. Cang Er Zi is hard and warm in nature, and belongs to the lung meridian. The drug has the effect of dispersing wind-cold, dispelling wind-dampness and clearing the nose. Cang Er Zi is often used in the treatment of wind-cold headache, congested nose, nasal abyss (mainly manifested as filthy nasal mucus, the amount of which can not be wiped clean), nasal congestion and runny nose, rubella and itching, paralysis and contracture of dampness and other diseases. When used, it should be noted that Cang Er Zi is poisonous and should not be taken in excess. Meanwhile, it should not be used by people with blood deficiency and headache. If necessary, it is recommended to use under the guidance of a professional doctor to identify the symptoms, and should not be taken on its own, so as not to delay the condition.