The work aims to improve the accuracy of distributed food amount of food measurement control system for packed meals and the packaging efficiency. A kind of food measurement control system for packed meals based on PLC was proposed, which could measure accurately and distribute the amount of food in the process of packaging the meals. The food measurement control system based on PLC was simulated and validated by configuration software. The simulation and validation achieved the desired results, accelerated the packaging efficiency and improved the intelligent level of the packaging. The food measurement control system for packed meals based on PLC may control the amount of food in lunch box very well. Compared to the current boxed lunch packaging method, it can greatly improve the packaging efficiency of boxed lunch, ensure the food amount in each boxed lunch and save the manpower costs.