Self-charging anti-theft alarm

The utility model discloses a self-charging anti-theft alarm. The human body induction alarm comprises a shell, a human body induction alarm body, a second limiting frame and a cover plate, a sliding groove is formed in the shell. A buzzer is arranged in the shell; a third limiting frame and a first limiting frame are welded in the shell; a first bolt is spirally mounted in the first limiting frame; a sliding block is mounted on the bottom end surface of the second limiting frame; the sliding block is installed in the sliding groove in a sliding mode, the second limiting frame is limited and fixed through a first bolt, a USB socket is embedded and fixed in the inner wall of the shell, a USB plug is installed on the rear end face of the human body induction alarm body, a lead is installed on the human body induction alarm body, and first threaded holes are formed in the shell and the cover plate. The device has the advantages of being simple in structure, convenient to operate and install and capable of being