With data mining method,the authors made a study on the regularities of drug use in the four-drug decoction and the like for dysmenorrhea.

• 用关联规则的数据挖掘方法探讨了古今医家用四物汤类方治疗痛经的用药规则,通过比较其置信度,确定古今医家在用药规律上无显著差别。