刑事诉讼行为的实体功能和程序功能是建立证据展示制度的理论基础。刑事诉讼行为的可期待性和互动性要求证据必须是控辩双向式展示的 ,并且在展示范围上 ,控方全面展开 ;而辩方不需展示对被告人、犯罪嫌疑人不利的证据 The substantive functions and procedural functions of the criminal procedure act are the theoretical basis for establishing the evidence display system. Expectations and Interactivity of Criminal Proceedings Requirements Evidence must be presented bidirectionally by accusation and prosecution, and in the scope of the exhibition, the prosecution is in full swing; and the defense need not show evidence of unfavorable evidence against defendants and suspects