The present invention discloses an N-(substituted sulfonyl)benzamide derivative, a preparation method therefor, and a pharmaceutical use thereof. Specifically, the present invention discloses an N-(substituted sulfonyl)benzamide derivative represented by a general formula (I), a preparation method therefor, and a pharmaceutically acceptable salt thereof, and their use as a therapeutic agent, particularly as Nav1.7 inhibitors. Definitions of the substituents in the general formula (I) are the same as those in the description.