In order to improve the quality of molten steel,reduce the cost of per ton steel and reduce the influence of converter slag,many steel plants have adopted the slag stopping system of converter slide plate.In this system,converter slag stopping slide plate is the refractory core,slide plate life affects the system replacement frequency and production rhythm and so on.Through studying the problems of slag sticking and steel clamping on the spot,it is found that the damages of inner and outer slide plates are in different positions and different states.Based on the existing technology of converter slag stopping slide plate,the processes of inner and outer slide plates are both improved,and the material of outer slide plate is developed.The results show that with other conditions remains,the frequency of the new scheme is much higher than that of the original scheme.