Small hydro-power plants in Hunan province are often located in remote mountainous regions with poor mobile signal

which has an effect on dispatch data acquisition. This paper brings long range（LoRa） wireless transmission technology to achieve long-distance and low power consumption communication by using linear spectrum extension modulation combined with front effect correction（FEC） and properly choosing the power supply mode of the data acquisition.With LoRa technique

dispatch information in those areas where there is no mobile signal can be successfully acquired and sampled every minute.