The invention provides a carrier table Ad-Hoc network method based on a low voltage power line. The method comprises the steps that a carrier host node assigns each Nth layer node to execute broadcasting and find adjacent carrier nodes in sequence, each Nth layer node collects the information of each adjacent carrier node of the Nth layer node and transmits the information to the carrier host node, the carrier host node distributes an MAC address for each adjacent carrier node of the Nth layer node, and the slave node of the carrier is recorded as the N+1th layer node. When all the Nth layer nodes find all the adjacent carrier nodes of the Nth layer nodes, whether a carrier node needing to be added to the network established by previous steps still exists is judged. If the carrier node needing to be added to the network established by the previous steps still exists, N is assigned to be N+1, and the first step of the method is executed, and if not, a process is ended, wherein the initial value of the N is 0, and the 0th layer node is the carrier host node. When the N is positive integers, the Nth layer node is the slave node of the carrier. The meter reading efficiency and stability of the network obtained by adopting the method are high, and effective communication distance is long.