中文摘要：

目的刻画疠气病因出现的逻辑推理过程。方法对吴又可《瘟疫论》中出现的有关疠气病因的条文进行重新排列,使用溯因推理的方法,分析这一过程中的思维特点。结果中医疠气病因的产生是一个基于类比的复杂溯因推理的过程,其中包含皮尔士溯因推理、最佳说明推理模型。结论中医病因溯因推理有着不同于西医病因溯因推理的结构,对于经由溯因推理得到的病因假说需要在逻辑的角度进行验证。

英文摘要：

Objective To describe the inference process of identifying epidemic qi as a disease cause.Methods Clauses related to epidemic qi in Wenyi Lun （Treatise on Warm Pestilence） written by Wu Youke were rearranged to analyze how he inferred epidemic qi as a disease cause with abductive reasoning.Results The discovery of epidemic qi as a disease cause is a complicated abductive reasoning process based on analogy, which contains Peirce＇s adductive model and inference model for the optimal explanation.Conclusion There are some differences between the abduction structure of TCM etiology and western medicine etiology;The etiological hypothesis, which is obtained through the process of abduction, needs to be verified from the perspective of logic.