The reasons of ore loss and dilution on end ore drawing in sublevel caving were analyzed and the existing problems on computational method of loss ratio and dilution ratio on end ore drawing were discussed. Based on the random medium ore-drawing theory, the computational method of loss ratio and dilution ratio on end drawing was established regarding the side drawnbody as a rotating body. Given the flow parameters of loose body of ore and rock, the value of loss ratio and dilution ratio on different ore drawing conditions could be decided based on these calculation formula. Lastly, the theoret...