Abstract: Over-defence and boundless defence are important parts of justifiable defence theory.The new criminal law increases boundless defence, which encourages people to defend properly.

• 摘要“防卫过当”和“无过当防卫”是正当防卫理论的重要组成部分，新型法增加的“无过当防卫”内容，有利于鼓励人们进行正当防卫。