Abstract: The wireless protocol of the Internet of things for power transmission and transformation equipment of the State Grid stipulates the auxiliary control system and online monitoring wireless communication mode .It promotes the development of power Internet of Things technology. Wireless communication is different from wired communication, the contents of the agreement cannot be seen or touched, manufacturers need a protocol visualization means in the process of product development and communication consistency interoperability to facilitate analysis and solution. This text designs the monitor module and protocol analysis software based on LoRa, A protocol analysis software can mount multiple monitoring modules through serial port communication, The LoRa monitoring module monitors the full band air message, the protocol analysis software displays the message content and sequence, and analyzes the message, it can also simulate the protocol to send the air message to the specified frequency band and play back the wireless communication process. In addition to monitoring messages, the monitoring and analysis software can also display the application layer data of corresponding messages, so that the protocol messages and application data can be displayed synchronously. This system greatly facilitates developers and testers to analyze and solve problems, help the product to iterate quickly, promote the rapid maturity of power Internet of things wireless products, Put it on the market in batches at an early date to promote the development of the digital economy of the power grid.