目的运用统计学方法分析产地对山药功效发挥的影响,并总结其规律。方法对《中医方剂大辞典精选本》所收载的含山药方剂进行收载记录,以山药的产地为主线,用Excel对其进行图表分析。结果需要补肺和补肾时,以怀山药为佳;需要补脾和固肾功效时不用特意指定怀山药。结论产地对山药的功效发挥有较大影响,其对临床和保健养生有较大参考价值。 Objective To analyze the influence of origin on the efficacy of yam by using statistical methods and to summarize its regularity. Methods The prescriptions of Chinese yam prescriptions contained in the book “Selected Articles of TCM Prescription Dictionary” were collected and recorded. The main production sites of Yam were recorded and charted by Excel. Results need to lungs and kidney, the best yam; need spleen and kidney effects do not have to specify the yam. Conclusion The origin of yam has a greater impact on the efficacy of yam, its clinical and health care have greater reference value.