Abstract: With the trend of the development of Internet of things in mine，intelligent mining，mining automation and unmanned mine as background，in order to achieve intelligent direction and solve the problems in management，security and information processing of open-pit blasting，modern communication technology，automation technology and software and hardware technology are used to focus on the overall architecture，core content and key technology of open-pit mine intelligent blasting.Functions such as the open pit mine drill automatic drilling and walking process，drilling precise positioning and navigation，perforation data record，wearing parts and consumable parts information records and others are investigated and designed.Research and design on communication network and database for the open-pit blasting，and blasting monitoring and blasting design software of the open pit mine are made.The system has good performance in practical application.

Key words: Internet of things technology, Intelligent mining, Blasting system, Open pit mine