Abstract:According to the requirement of outward character in processing traditional Chinese drugs,five volatile oil containing drugs Fructus Viticis,Rhizoma Atractylodis Macrocephalae,Rhizoma Cyperi,Fructus Foeniculi and Fructus Aurantii were fry processed.The conditions of frying technology were measured;the amounts of volatile oil before and after processing were determined with accurate volatile oil extractor;and the volatile oil in Rhizoma Atractylodis Macrocephalae and Fructus Aurantii was analyzed by means of GC.