Abstract: In order to get rid of the complicated wiring and poor extensibility of the existing automatic temperature and humidity monitoring system,a remote monitoring system for bulk curing barn was designed on the basis of Internet and ZigBee wireless sensor network. The designed system acquired the data of temperature and humility in curing barns via sensors,a coordinator transmitted the collected data to a local monitoring center through RS232,or linked to Internet through a GPRS module to implement remote data monitoring. The results showed that:1) The errors of mean temperature and humidity values measured by the designed system were within the range of ±0.6 at yellowing,color fixing,and stem drying stages. The data measurement and transmission were stable and reliable, and measurement accuracy met the requirements for the acquisition of temperature and humidity data in flue-curing barn. 2) Monitoring data could be sent to a mobile phone as messages to facilitate managerial staffs' inspecting of the temperature and humidity in curing barn. The designed system changed the management mode of bulk curing barn, reduced the labor intensity of tobacco flue-curing,and improved the flue-curing quality of tobacco leaves.