Shenzhen-Zhongshan River-crossing Link is another cross-sea traffic project in China integrating bridges，islands，tunnels，and underwater interchange after the Hong Kong-Zhuhai-Macao Bridge. With the important mission of bridge-tunnel conversion，whether the west artificial island can be quickly and safely formed is a key part of the whole project. The west artificial island has high functional requirements，a short build period，and certain difficulties in design and construction. This paper demonstrates the overall design of the west artificial island and rapid island-formation technology，which mainly includes the location，shape，and plane layout of the island，the diameter of the steel cylinder of the island wall structure and the DSM assisted vibration sinking construction，which can provide experience for the construction of large artificial islands in the deep sea.