Abstract: Grain drying is an important and complex process in grain storage and agricultural product processing．Since this process is affected by numerous uncertain factors, achieving precise control is of great significance．A grain drying control system based on fuzzy control technology was introduced．Various aspects were discussed in detail, including system principles, structural design, parameter selection, etc., and operational performance of fuzzy control technology was evaluated by adjusting temperature and humidity parameters in the barn．Stability and reliability were assessed, and technology achieved ideal results．This could lay a solid foundation for development and promotion of this technology．