The belt conveyer has been widely used in iron and steel enterprises. It is with such characteristics as long transportation time, strong transportation capacity, high safety and efficiency as well as low economic costs. In recent years, it is the key problem how to achieve safety and high efficiency in production process of iron and steel enterprises with the growing demands of transportation capacity for enterprises. The belt conveyer is important equipment for production and development of iron and steel enterprises as well as its safe operation has become an important link in the whole production chain. Once there is the failure of conveyer belt, it will seriously affect normal production of enterprises. In order to ensure the belt conveyer to be operated normally, corresponding preventive measures for tearing of belt should be taken by iron and steel enterprises. In this paper, the causes for tearing of belt for belt conveyer are analyzed, which could provide the basis for solving the problems of belt conveyer brought to production.