口供是指犯罪嫌疑人、被告人在刑事诉讼中就其被指控的犯罪事实以及其他案件事实向公安司法机关所作的陈述,具有真实性、自愿性。口供可划分为庭外供述和庭上供述,就审判阶段而言,庭外供述必须转化为庭上供述才能作为定案的根据。在共同犯罪中,同案被告人口供不能作为证人证言使用,即使同案被告人口供一致,仍需其他证据予以补强。 Confession refers to the criminal suspects, defendants in criminal proceedings on the facts of their charges and other facts of the case to the public security organs made statements, with authenticity and voluntariness. Confessions can be divided into extra-court statements and court statements. As far as the trial stage is concerned, extra-court statements must be translated into court statements to justify the verdict. In joint crimes, the co-defendants’ testimony can not be used as witness testimony, and even though the co-defendants make the same confession, other evidence is still needed to be reinforced.