Cable anti-theft alarm system

The invention discloses a cable anti-theft alarm system which comprises an infrared detector, a single chip microcomputer, an alarm and a computer management platform. The infrared detector is arranged on a telegraph pole which is used for erecting cables. The infrared detector is used for sending an alarm message to the single chip microcomputer when detecting that an object moves below the telegraph pole. The alarm message comprises address coding information. The single chip microcomputer is used for controlling the alarm located on the telegraph pole corresponding to the address coding information to give an in-site alarm according to the alarm message and transmitting the alarm message to the computer management platform. The alarm is arranged on the telegraph pole used for erecting the cables. The alarm is used for giving the in-site alarm within a preset duration range according to the control of the single chip microcomputer. The computer management platform is used for instructing a communication system to send an alarm processing instruction to a user terminal corresponding to the address coding information in a preset communicating mode according to the alarm message. The cable anti-theft alarm system can effectively prevent the communication cables from being stolen and improves the safety of the communication cables.