To analyze and summarize Professor Li Yuanwen's experience in treating scalp seborrheic dermatitis by using data mining method.Methods:Information about 120 cases of scalp seborrheic dermatitis treated by Professor Li Yuanwen from October 2016 to January 2018 was collected.The Traditional Chinese Medicine Inheritance Support System (V2.5) was used to analyze the frequency of drug use，four properties and five tastes of the herbs and their channel tropism.The association rules was used analyze mining drug association rules.Results:A total of 151 herbs were obtained through analyzing 120 prescriptions.The main herbal properties were cold，warm and plain.The main herbal tastes were bitter，sweet and pungent.The channel tropism of these herbs were mainly in spleen，liver，stomach and lung channel.And the core prescription herbs were Rhizoma Atractylodis，Semen Coicis，Rhizoma Atractylodis Macrocephalae，Poria，Pericarpium Cirri Reticulatae，Rhizoma Pinelliae，Fructus Aurantii，Fructus Crataegi，Folium Eriobotryae，Herba Hedyotis.Conclusion:The data mining was used to analyze and summarize Professor Li Yuanwen's medication experience on scalp seborrheic dermatitis to provide a more objective statistical basis for inheriting his academic experience.