Considering large size gate,multiple functions,complex structures,limited space and other technical problems,we adopt the new structure of the vertical lifting small gate in large gate,the innovative design of the water seal structure,the compact layout of the hoist device and the drainage system etc.We apply new design ideas and relevant measures in the design process.Consequently,the layout of gate structure,hoist,water seal,water filling,drainage and internal equipment of the gate are perfectly resolved.So far,the gate has been successfully put into operation,which provides a reference for the future design and application of gates of the similar type.