The invention discloses a lamb carcass computer vision auxiliary segmentation system. The system comprises a standardized gradual segmentation database, an information entry module, a query module, a lamb carcass information database, an inventory management module, a data transfer module, a display module and a carcass segmentation module. The query module compares rating information of the information entry module with pre-stored information in the standardized gradual segmentation database, a lamb carcass is subjected to grade and specification division, a corresponding segmentation method is provided, the lamb carcass is subjected to visual standard segmentation under data interaction and display of the lamb carcass information database, the inventory management module, the data transfer module and the display module, 46 main commercial mutton sheep varieties in China are covered, 225 finely-segmented products with 25 types of products with bones and 13 types of products without bones are segmented, the segmentation accuracy is 95%, and the segmentation efficiency is 3,000 per day. By means of the segmentation system, the segmentation accuracy and segmentation efficiency are improved, and the span from experiential segmentation to standardized segmentation is achieved.