口供在证明案件事实上发挥着不可替代的作用。要使口供具有证据能力,应证明取得口供的过程合法,口供的表现形式合法,取得口供的方法合法;要使口供具有证明效力,口述中要有作案人才知晓的隐蔽性情节,对犯罪嫌疑人实施犯罪的情节要有具体动作描述,记载的犯罪嫌疑人实施的行为要合乎情理,还要有犯罪嫌疑人对作案动机的合理阐述。 Confessions in fact prove that the case plays an irreplaceable role. In order to make the confession have the evidence ability, it should be proved that the process of obtaining the confession is legal, the confession forms are legal, and the method of confession is legal. In order to make confession have the attesting effect, there should be the concealed circumstance that the confession is known to the confession, The circumstances of the implementation of the crime should have a description of the specific actions recorded in the suspect’s conduct to be reasonable, but also the suspects on the motives for a reasonable exposition.