According to the actual structure parameters of stope and the rule of ore drawing in Jinsandian Iron Mine,based on the optimized design of blasting parameters for pillarless sublevel caving,a computer aided blasting parameters design system for stoping has been developed.This system can simulate the optimized blasting parameters designs under the condition of the various structural parameters of stope,and present blasting bore layout chart with blasting parameters to provide reference for the designer.This system is characterized by high design efficiency.