A real-time monitoring and prediction system of temperature and humidity at each location of bullet storage is designed to aim at the problems of poor real-time monitoring, high power consumption, low detection accuracy, no prediction or inaccurate prediction existing in the traditional bullet storage environment monitoring device. The real-time collection of environmental information of each measurement node is realized by using wireless transmission and low power technology. The environmental information is forecasted by using the maximum similar day algorithm and displayed in the background. The power consumption of the device is low during operation, and the theoretical service time of a 2700mah battery can reach 6 years. The accuracy of measurement is ±0.5℃ and ±2RH%, and the accuracy of prediction is ±1℃ and ±5RH%. The experimental results show that the monitoring device can real-time monitor the environment temperature and humidity of the bullet storage location and effectively predict the temperature and humidity. It has the advantages of good real-time performance, high measurement accuracy, accurate forecasting and other advantages, which effectively solves the problems of difficult information monitoring and low prediction accuracy in the environment of arms and ammunition storage.