The most used ZigBee protocol in Internet of Things (IOT) is not compatible with the TCP/IP protocols, so the convergence of these two kinds of networks is the essential technology in IOT. The thesis analyzes the requirement of the IOT gateway at the beginning, then designs and realizes a ZigBee gateway prototype, based on the CC2530 develop kit, Longson 1B develop board, Zstack and embedded Linux system, achieves functions such as management of the ZigBee network, protocol conversion and data transmission, and then verifies these functions through experiments.