Object: To observe the therapeutic effect of Phellodendron nose drop on the patients suffering from chronic simple rhinitis and explore the mechanism of it,so as to find new ideas and effective drugs to treat it.Methods:60 patients,who suffer from chronic simple rhinitis,were divided into two groups at random. The treatment group which involved 30 patients had been taken Phellodendron nose drop for 14 days. The control group were given 0.5%Chlorine hemp fluid . Observe the changes of symptoms,physic...