Abstract: Problems existed in constructing Internet of things(IoT) of metal mine in China were analyzed. A concept of constructing IoT ecosystem of metal mine adapting to characteristics of Chinese metal mines was proposed, which was an inevitable way to realize safety, efficiency, green and sustainable development of mine industry. Existing development conditions of IoT technology of metal mine at home and abroad were introduced. Technology connotation and architecture of the IoT ecosystem of metal mine were given. Key points about construction of the IoT ecosystem of metal mine were expounded including links of scheme design, system construction, production operation, data application, system maintenance, optimization control and upgrading.