Current leading-out device of resting cable, installation method and anti-theft alarm system

The invention relates to a current leading-out device of a resting cable, an installation method and an anti-theft alarm system, the current leading-out device is used for detecting a current signal of a tested resting cable, the current leading-out device is used for connecting a cable head of the tested resting cable, the current leading-out device comprises a sealing cap, a sealing cap connector, a conductive pile and a wire, and the cable head comprises a sealing cap part and an outer protection part. An outer protective layer of the tested resting cable is removed from the cap sealing part; the sealing cap is of a cylinder structure, a containing chamber matched with the sealing cap part in size and used for containing the sealing cap part are formed in the sealing cap, the conductivepile is located in the containing chamber and used for being connected with a wire core and being connected out through a wire, a wiring hole is formed in the bottom of the sealing cap, and the sealing cap connector is fixed