Objective: To improve the accuracy and comprehensiveness of oyster grading. Methods: The oyster automatic grading equipment was proposed and designed. the oyster queuing structure combining the rotating drum and the baffle conveyor belt. the grading method combining weight detection and machine vision detection were determined. https://www.kingarte.com/product-category/food-servicecommercial-kitchen-equipmentfood-preparation-equipmentprep-tablesrefrigerated-prep-tables/