The work aims to solve the time-consuming, laborious problem, poor consistency, food pollution, low packaging efficiency and other problems in food packaging. The full-automatic fresh-keeping, packaging and refrigeration system of plate food studied in this work comprised film pulling and film renewal, clutch film breaking, adaptive roller film sealing, feeding and transportation, refrigeration reclaiming, etc. The machine vision technology was used to automatically set relevant operation parameters of the machine, so as to complete the automatic packaging of the machine and realize the goal of replacing laborers with machines. After repeated experiments with multiple samples, the image recognition speed was less than 0.1 s. The machine supported the packaging of multiple kinds and sizes of plates to meet the design requirements. This study has achieved the purpose of saving the workforce, improving production efficiency, and improving the level of intelligence. It has important guiding significance for catering enterprises and families to eliminate manual film sealing.