Abstract: Wireless sensor network test tool is great significant for the wireless sensor network's in-depth research and applications. A testing method of non-intrusive wireless sensor network was proposed, and the design and implementation of a wireless sensor network tester based on this method were introduced. I}his tester uses the FPGA to speedily collect the signal of the node inner communication without intrusive to work of the node, and then send the signal to the center scrvicer. With processing these signals, the center servicer can revert the communication of the node or all wireless sensor network. I}he experiment proved that this tester can he very good at collection of the nodes communication data without interference to the work of nodes.

Key words: Wireless sensor networks, Wireless sensor network tester, Wireless