Abstract: In view of the situation that the frozen data of the low-voltage acquisition terminal is unstable due to the unstable mobile wireless communication signal in the low-voltage distribution area at present, this paper developed a plug and play intelligent acquisition device for the distribution area based on LoRa (long range) Internet of Things. The LoRa technology with low power consumption, long transmission distance and low transmission bit rate is applied to the design of intelligent acquisition device, and the voltage and current of the low-voltage outlet switch are collected and processed and sent to the intelligent transformer terminal (intelligent fusion terminal). After the experimental test in the power supply office of the company, the average acquisition success rate of the device is 96.4%, which can ensure the power supply quality of low-voltage grid and its reliable and safe operation, and improve the reliability of power supply.