Objective  To analyze the medication rules and characteristics of external preparations in Taiping Huimin Heji Jufang (hereinafter referred to as “Jufang”) by means of frequency statistics and association rules.

Methods  The data of prescriptions, drugs and symptoms were processed according to the standard of Jufang and statistical analysis was carried out.

Results  Most of the external formulations used in Jufang were powder, mainly for treating sores, swelling and fractures, and usage was to be put in the affected area. Drugs were mostly superficies-relieving formula, and medicinal properties were cold and warm; the flavour was mainly pungent and sweet; the meridian tropism was mainly heart and liver channel. In addition, high-frequency drugs such as Angelica sinensis, Angelica dahurica, Coptis chinensis, Paeonia veitchii, Glycyrrhiza uralensis, and drug pairs (Angelica sinensis, Paeonia veitchii, and Angelica dahurica) were obtained.

Conclusion  The analysis of the function characteristics and medication rules of external preparations of Jufang by data mining has guiding significance for the clinical development of external preparations.

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