Abstract: The article describes a new seal rotating hook.In the new structure,rotary is directly connecting with the hook.Compared with conventional hook,the new hook not only reduces the height and overall weight,but also the sealability is improved.It can well meet the 6～8m³ bucket lifting large volume requirements.Conjunction with other equipment,the new hook achieve rapid discharge refuse in large diameter ultra-deep shaft construction successfully,and improve work efficiency.This article verifies the reliability and practicality of new hook in the aspects of design,calculation and on-site application systematically.