The flavor of Cang Er Zi is pungent, bitter, warm and slightly toxic. Cang Er Zi generally belongs to the lung meridian, has the significant effect of dispersing wind-cold, nasal orifices, dispelling wind-dampness, usually used for the treatment of wind-cold headache, nasal congestion and runny nose, nasal abyss, for example, if the patient feels a little bit of rhinitis symptoms can also be used. Cangzhi can also be used to treat rubella itching, rheumatism paralysis and other diseases.