Artificial intelligence technology based on pathological slice images promotes the development of medicine, and the development of artificial intelligence technology in pathological imaging benefits from the digital whole slide. The digitization of whole slide can provide a large amount of data that can be freely amplified and conveniently labeled, which is conducive to deep learning and clinical application. Digital whole slide is not only applied to human pathology, but also to animal and plant pathology. In this paper, we systematically discussed the role of digital whole slide combined with artificial intelligence technology in pathological recognition, feature extraction, animal models and plant morphology, aiming to provide new clues for the clinical practice of digital pathology.