Belt conveyors are the "big artery" connecting different processes in the beneficiation production, which occupies a very important position in the production. Whether conveyors can operate normally and effectively directly affects the stable and smooth running of the whole plant. The unattended belt conveyor system removes the custodial posts and realizes the unattended belt conveyor system through effective technical and management means; and establishes a new production organization mode, implements a professional spot inspection and cleaning system, and the belt conveyor system can stably run in long term.