本文总结了我国连铸用浸入式长水口的发展过程,着重介绍了熔融石英质和铝碳质浸入式水口的工艺研究,产品性能,使用效果,存在问题及今后努力方向.最后,为今后的研究工作提出建议. This paper summarizes the development process of continuous casting submerged entry nozzle in China, and emphatically introduces the process research, product performance, use effect, existing problems and future efforts of fused quartz and aluminum carbon submerged entry nozzle.Finally, Research work to make recommendations.