Aiming at fire control requirement with high level from large-scale modem city buildings, the wireless emergency direction light system based on technology of Intemet of things. Based on the hardware nodes of a kind of novel wireless fire- fighting emergency light, an integrated experiment system is designed by combing the developed wireless communication protocol and computer software. In order to test the performance of this wireless emergency communication network system, we collect data on average communication delay, average dropout rate, signal strength and energy consumption of light nodes, and analyze them. The study results show that average delay and average dropout rate become bigger as the number of building levels increases and the signal strength weakens. Finally, the energy consumption of unite time of nodes can satisfy the basic requirement from application.