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The aerostat needs to adjust the pressure and buoyancy of the capsule body with the help of the switch of the exhaust valve during flight, and monitor the flight status by collecting data from the temperature, pressure-drop and other sensors installed on the exhaust valve. At present, the power supply and control signals of exhaust valve and the acquisition signals of sensors are generally transmitted through the cable installed on the capsule. With the increase of the volume of aerostat and the number of exhaust valves, the existing transmission mode through the cable is limited in application. Based on the research of LoRa long-distance wireless communication technology, the design of remote terminal of aerostat based on Internet of things technology is proposed. The sensor data distributed on the aerostat is transmitted wirelessly and the exhaust valve switch is controlled wirelessly. The hardware circuit is designed, and the transmission reliability is guaranteed by software simulation and modulation. This verifies the feasibility of using the Internet of Things technology to collect and transmit sensor data on the aerostat, and provides a new idea for data collection and transmission and pressure difference control on the aerostat.