从立法和逻辑两个层面分析得出我国界定非法口供的一个核心要素是获得口供的方式是否给被讯问人造成难以承受的痛苦,故因此将该要素认定为“痛苦规则”。文章将痛苦规则与相关的自白任意性规则进行比较区分,论证为何我国界定非法口供选择的是痛苦规则,并思考如何定量“痛苦”。 From the legislative and logical levels, it is concluded that one of the core elements in defining the illegal confession in our country is whether or not the means of obtaining confessions causes unbearable suffering to the interrogated people. Therefore, this element is identified as the “painful rule”. The article compares the painful rules with the related confessions arbitrary rules, and demonstrates why our country defines the painful rules of illegal confession and how to quantify the pain.