Objective To analyze the medication rules of Chinese medicine great master Prof. XU Jingshi in treating stomachache of stagnation of liver Qi and spleen deficiency type. Methods The medical records of Prof.XU Jingshi in treating stomachache of stagnation of liver Qi and spleen deficiency type were collected. The medical information was logged by structured information collection system for clinical diagnosis and treatment. Common symptoms

herbs of high frequency and core herb combinations were analyzed by data mining technology. Results Totally

85 patients were collected

157 clinical times

711 symptoms

103 herbs. Common clinical symptoms of stomachache patients were stomachache

belching and insomnia. Patients with insomnia were more than 40%. Herbs with the frequency larger than 50% were Zhuru [Caulis Bambusae in Taenia]

Chenpi [Pericarpium Citri Reticulatae]

Lü’emei [Flos mume]

Zhiqiao [Fructus Aurantii]

Banxia [Rhizoma Pinelliae]

Huanglian [Rhizoma Coptidis]and Suanzaoren [Semen Ziziphi Spinosae]. Herbs used were mainly mild nature and sweet flavor

and mostly influnced the spleen

stomach

liver and gallbladder channels. Complex network diagram showed that core herbs were Zhuru

Chenpi

Lü’emei

Zhiqiao

Banxia

Huanglian

Suanzaoren and Baishao [Radix Paeoniae Alba]. Chinese herb group association rules showed that herb groups included Zhuru-Chenpi

Lü’emei-Chenpi

Chenpi-Zhiqiao

Lü’emei-Zhiqiao

Lü’emei-Chenpi & Zhuru

Chenpi-Lü’ emei & Zhuru and Zhuru-Chenpi & Lü’ emei

etc. Conclusion Based on data mining technology

the authors found that when Prof. XU Jingshi treated stomachache of stagnation of liver Qi and spleen deficiency type

Zhuru

Chenpi and Lü’emei were mostly used. Herbs used by Prof. XU were mainly mild nature and sweet flavor

and mostly influnced the spleen

stomach

liver and gallbladder channels.