The invention discloses a LoRa-based low voltage user data transmission method. The method comprises the following steps of a, centralizing and calculating low voltage users; b, selecting an address nearby a scope node, constructing a communication machine room, and guaranteed that intelligent meter data is communicated with the communication machine room; c, constructing a distribution network ina centralizing manner, performing unified security management on power of low voltage users of each range node, constructing a distribution network, and storing and transmitting data in real time; d,verifying data of the intelligent meter primarily; and e, uniformly analyzing transmitted data by a background general data end, tabulating, and then storing uniformly. A remote meter reading systemis realized based on a LoRa technology, and the method has the advantages of wide coverage, low communication cost, and efficient, real-time remote data reading, enables a power enterprise to manage meter reading business more regularly, and solves a problem that nodes are distributed and are hard to manage, thereby being an ideal power data transmission solution of the power related enterprises.