The invention discloses an insulator image segmentation method. The insulator image segmentation method comprises the steps of collecting a background image containing an insulator; sending the background image to a preset image segmentation model for image segmentation to obtain a segmentation result of the background image; and selecting an insulator segmentation image according to the segmentation result. According to the insulator image segmentation method, by constructing the preset image segmentation model, pixel-level segmentation can be carried out on a complex image background, and the edge of a target object is accurately positioned, so that the influence of the complex background on the target object is eliminated, and the segmentation result of the insulator is more accurate.