In this study, the hardware and food control program were designed, the implementation of food control functions and control process were expounded. Results show that the food control system improves reliability and operability of the automatic control system, making maintenance and management more convenient and wide application value for engineering. The main function of the former is to collect food quality indicators, while that of the later is to analyze and process the indicators collected, display the corresponding results. To effectively prompt or alarm the user, the core control unit of the control terminal creates corresponding control commands and texts to the speech synthesis chip which will drive the loudspeaker to sound.