刑事辩护是刑事诉讼中最为重要的制度之一。辩护作为一种诉讼职能 ,是刑事诉讼结构的重要组成部分 ,是现代诉讼控辩平等理念的主要支柱 ,是通过牵制控诉保证法院居中裁判的重要保障。辩护制度是由多种规范、法则、程序等因素共同构成的一个复杂的综合体 ,要完善辩护制度 ,则首先要对构成辩护制度的各要素进行研究、探讨 ,而后加以改进。 Criminal defense is one of the most important systems in criminal proceedings. As a kind of litigation function, the defense is an important part of the structure of criminal litigation and the main pillar of the concept of equality in the prosecution and defense of modern litigation. It is an important guarantee to ensure that the court will center the referee by holding the indictment. The defense system is a complex complex composed of many kinds of norms, rules and procedures. To improve the defense system, we must first study and discuss the elements that constitute the defense system and then improve it.