Intelligent SAR-reducing device, protection sleeve and terminal

The utility model discloses an intelligent SAR-reducing device, protection sleeve and terminal. The intelligent SAR-reducing device comprises an antenna assembly and an induction assembly, wherein the induction assembly is used for sensing and judging whether a human body approaches to or contacts the antenna assembly, and also used for controlling the antenna assembly to reduce input power when sensing that the human body approaches to or contacts the antenna assembly. Through the mode above, when the human body approaches to the antenna assembly, the input power of the antenna assembly is automatically reduced, thereby reducing radiation of the terminal on the human body and reducing harm done to the human body.