The invention discloses a partial discharge fault source visual identification device which comprises a supporting structure, an identification supporting frame, a numerical control cradle head, a CCD camera, a driving control module and a displayer. The identification supporting frame is arranged on the supporting structure, and the numerical control cradle head is arranged on the upper end face of the top of the identification supporting frame. The CCD camera is arranged on the numerical control cradle head and connected with an external upper computer. The driving control module is arranged on the lower end face of the top of the identification supporting frame and connected with the numerical control cradle head and the external upper computer. The displayer is arranged on the side face of the identification supporting frame and connected with the external upper computer. When space coordinates of a partial discharge fault source are detected, the space coordinates serve as the input, the driving control module can automatically identify two-dimensional image coordinates corresponding to the partial discharge fault source visual identification device, the numerical control cradle head is controlled to act, the CCD camera is driven to move to the position where related visual information can be output, and the purpose of fast and accurately positioning and identifying the fault source is achieved.