As heat source or power source,industrial boilers are widely used in all aspects of production and life.However,the operation and maintenance level of industrial boilers is lower,which is prone to serious accidents such as boiler explosion.Therefore,combined with the background of holding large-scale sports events and through the in-depth analysis of the actual industrial boiler accidents,this paper summarizes four types of serious accidents of industrial boilers and their causes.This paper forms an industrial boiler safety evaluation and warning method based on security measures and use scenarios.According to this method,the industrial boiler on-line monitoring and warning system is developed and successfully used in the industrial boilers for the Winter Olympic Games,which can realize real-time monitoring and warning of the actual industrial boiler.The safety and stable operation of industrial boilers are guaranteed.