Abstract: To explore the medication rules fordiarrhea due to spleen deficiency in children treated by Professor Wang Shouchuan. The outpatient prescriptions on diarrhea due to spleen deficiency were summarized by three data mining methods(frequency statistics, association rules and cluster analysis) to find out the core prescribed drugs and modified prescribed drugs in the treatment of diarrhea due to spleen-deficiency. It is concluded that the core medicine in the treatment of spleen deficiency diarrhea in children is composed of rhizome atractylodis, Poria cocos, baked ginger, simmered bitter cardamom, fried malt and Amomumvillosum, which shows the treatment principle of warm movement of spleen-yang.

Key words: Diarrhea due to spleen deficiency, Moving and warming spleen yang, Data mining