正当防卫这个概念我们并不陌生,同时经常听到的另一个概念就是防卫过当。这两个概念是截然不同的。他们的区别在于一个限度,是否超过了“正当”的概念。正当防卫的概念法律上有明确的规定,而其理念却在刑法与民法之间存在着差异。本文从民、刑法两个角度对正当防卫的区别进行了阐述,以期引起人们对正当防卫的重视。 We are no stranger to the concept of due diligence, and another concept that we often hear is defensiveness. These two concepts are completely different. Their difference lies in a limit, whether it exceeds the “legitimate” concept. The concept of justifiable defense has a clear legal stipulation, and its concept differs between criminal law and civil law. This article elaborates the difference between justifiable defense from the angle of people and criminal law with a view to arousing people’s attention to legitimate defense.