In order to meet the requirement of wireless networking of curing barn controller in bulk curing barn system, a design scheme of curing barn controller based on ZigBee wireless communication is proposed. Using STM32 as the main control chip. Backup battery power supply mode can ensure automatic data storage when the system is powered off. Serial port touch screen makes the man-machine interface more friendly, intuitive and easy to operate. Serial port ZigBee wireless module meets the network design requirements of star network in roasting barn group. The stepless speed regulation of the recirculating fan driven by the frequency converter improves the precision temperature control and energy saving of the roasting. Finally, The experimental results show that the controller is stable and reliable, and effectively improves the management level of the roasting barn group.