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In order to realize the remote monitoring of the running status of the electrical equipment, it is necessary to collect and report the power data of the equipment during operation to the cloud platform. For the above purpose, this project designs a power acquisition system based on LoRa ad hoc network technology. The whole system is mainly composed of data acquisition nodes and concentrators. The data acquisition node uses the RN8209 power metering chip to accurately collect the load power data, and sends the data to the concentrator through the LoRa communication module.The concentrator adopts a dual-module design based on the NB-IoT communication module and the LoRa communication module. It receives the data reported by the node through the LoRa module, and forwards it to the IoT cloud platform through the NB-IoT module. This system uses LoRa carrier sense technology to design a star-shaped ad hoc network based on CSMA/CA, which realizes wireless communication between nodes and concentrators, and is suitable for low-cost, small-scale remote power data acquisition systems. Through the experimental verification, the data acquisition function, LoRa ad hoc network communication function and NB-IoT communication function of the scheme can be realized normally, and the design goals have been achieved.