Objective: Solve the problem of inaccurate temperature control of liquor entering the cellar. Methods: Based on the embedded platform, a ZigBee wireless sensor network for cellar parameter aggregation is constructed. The cellar environmental data transmission, storage and display were realized through NB-IOT and cloud platform. Algorithm, real-time optimization of output parameters Kp, Ki, Kd, to achieve precise control of cellar temperature. Finally verify the performance of the temperature control system. Results: The maximum deviation between the measured temperature and the set temperature by the fuzzy PID control algorithm is 0.25 ℃, the overshoot is 1.6%, and the error is within 5% by comparing the manual measurement data with the data collected by the monitoring system. Conclusion: The temperature of entering the cellar can be controlled quickly and accurately by using the fuzzy PID control strategy.