The invention discloses a wire and cable quality detection system, which comprises a controller, a display module, an acquisition device, a pulse generator and a pulse receiver, wherein the acquisition device, the pulse generator and the pulse receiver are connected to the whole to-be-detected electric wire and cable; the controller is respectively connected to the acquisition device, the pulse generator, the pulse receiver and the display module; and the controller can determine a detection result of the whole to-be-detected electric wire and cable according to an electric signal of the wholeto-be-detected electric wire and cable, which is acquired by the acquisition device, and a reflection signal received by the pulse receiver, and control the display module to display the electric signal and the detection result. Through the application of the detection system, the quality of the whole wire and cable in the field can be directly detected, the problems that the load flow of the electric wire and cable is low and the heating is serious due to the fact that the quality of the electric wire and cable used in the field is poor are solved, and compared with a traditional method of evaluating the quality of the whole to-be-detected electric wire and cable by quality detection of the local electric wire and cable through a measuring tape, the detection accuracy and the safety of an electric power system are improved.