The utility model provides a space partial discharge interference positioning device, which is characterized in that an array antenna is arranged in a space to be detected and is used for acquiring anelectromagnetic wave signal emitted by an interference source; the pan-tilt control module is connected with the array antenna and the background analysis positioning device; the channel conditioningmodule is connected with the array antenna; the high-speed data acquisition device is connected with the channel conditioning module; the background analysis positioning device is connected with thehigh-speed data acquisition device; the camera and the laser are connected with the background analysis positioning device; the background analysis device analyzes the spatial coordinates of the interference source; the position of the laser device is adjusted to enable a laser point emitted by the laser device to point to an interference source, the position of the camera is adjusted to be aligned with the interference source for photographing, and finally the interference source position and an imaging picture are displayed on a background analysis device screen. The equipment is convenientto install, simple to debug, convenient and easy to use, and interference source positioning precision is improved by adopting the rhombic array antenna.