Abstract: We propose a new type of wire rope based on radial multi-path uniform radiation magnetization of the online monitoring experimental teaching device. An array structure model of the uniform radiation excitation is established, the effect of the model’s uniform magnetization of the wire rope is studied, and a full-component information array polymagnetic detection technique is proposed. In view of the drift interference signal generated by on-line monitoring, the pre-processing method of signal based on mean Kalman filtering is given. And set up an experimental platform for laboratory testing and verification, the results show that the new experimental device can effectively identify micro-damage with the length less than 3 mm, and can provide multidimensional information parameters of damage signal synthetically.