An integrated wireless LAN protocol analysis apparatus, and an analysis method and a practice teaching method using the same are provided to automate a channel analyzing and setting process, minimize a loss of a wireless LAN packet, and provide data for accurate wireless LAN analysis. A wireless LAN analysing system(140) performs network management, protocol analysis, and a training package for data communication practice. A protocol decoder collects a packet generated from a wireless LAN node, summarizes and analyzes a protocol based on a basic protocol header, and displays information. A net tool manages a wireless LAN network, checks a state of a system, tracks a path by automatically searching an IP address and a name, and provides information about a communication network. A network management information is displayed in the form of diagrams and graphs with respect to the packet and channel information to provide information for a network management. The protocol decoder includes decode, nodes, protocols, summary channels, signal, matrix, and log.
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