The invention discloses a local discharge test terminal of a cable accessory for measuring a prefabrication defect. A cable body comprises a wire core and a protective layer coating the wire core; the upper end of the wire core of the cable body is fixedly connected with a copper pig tail; the copper pig tail is connected with a high-voltage lead; the bottom of an organic glass oil cup with a metal bottom is made of a metal and is provided with an organic glass cup wall; silicon oil is contained in the organic glass oil cup with the metal bottom; the bottom of the organic glass oil cup with the metal bottom is arranged on an epoxy resin cushion block; the epoxy resin cushion block is fixed on an insulating base; resin, next to the epoxy resin cushion block, of the insulating base is fixed with an epoxy resin support rod; the cable body is fixed on the epoxy resin support rod through two copper clips; the lower end of the cable body extends into the organic glass oil cup with the metal bottom; and the lower end of the wire core of the cable body is in contact with the metal bottom of the organic glass oil cup with the metal bottom. According to the local discharge test terminal, the problem of local discharge of the cable test terminal is effectively avoided, and the test accuracy is effectively ensured.