Abstract: In view of the existing intelligent fire monitor control system which transmits data in the master-slave system through the communication bus which is limited by the communication ranger and complicated electromagnetism environment, a kind of wireless monitor control system is designed based on Internet of things. For hardware, STM8S MCU and 433MHz wireless RF module were adopted as the main controller and the wireless data transceiver respectively. This article mainly designed the specific hardware circuit as key modules and the scheme for algorithm program. The testing of the communication distance, anti-collision and security authentication were carried out.The test results show that the system has the characteristics of long communication distance, low bit error rate and reliable multi machine communication.The system has been successfully applied to the reconstruction of fire artillery.