Abstract: In order to solve the shortcomings of low efficiency and poor accuracy in insulation state detection of distribution cables, a collaborative detection technology for insulation state of distribution cables is proposed. By utilizing the advantages of high detection efficiency of ultra-low frequency dielectric aging factor and high detection accuracy of oscillation wave partial discharge, the fast and accurate detection of cable insulation state is achieved. The article analyzes the detection mechanisms of ultra-low frequency dielectric aging factors and oscillating wave partial discharge detection, and uses ATP-EMTP simulation analysis method to analyze the feasibility of the application of the above two detection technologies. According to the actual test results, it can be seen that the collaborative detection technology for insulation status of distribution cables can achieve rapid and accurate detection of the insulation status of distribution cables, providing a new detection technology for further improving the application safety of cables.