The invention discloses a disconnecting link state collecting device, which comprises a detecting sensor and an inductive attachment. A detecting sensor shell has a long strip structure and can be bent for deformation. The detecting sensor includes two magnetic sensing devices and a state collecting and output module; and the magnetic sensing devices are Hall elements and each magnetic sensing device corresponds to one position state. The magnetic sensing devices are connected with the state collecting and output module by wires. The state collecting and output module outputs a disconnecting link state signal after processing, wherein the signal output mode can be a hard contact mode or a communication mode. The inductive attachment includes an induction bracket and a permanent magnet-magnet steel; the induction bracket has a strip structure and the length and angle adjustment is made based on the actual structure and position of the disconnecting link; and the induction bracket is fixed at a disconnecting link mechanism by screws or hoops or a pasting way. The device has advantages of high detection precision, high safety and reliability, and strong engineering adaptability.