Taiwan is an island sound by ocean. The green transit from sea travel is gradually instead of vehicle transportations, even sightseeing and leisure more than daily human and material movements. It is a fresh and tendency of existing green living styles. The coast of Hsinchu City, as developing a blue highway system, it is already planned by council's policy making. After concise design and analyzed on it, which still not to be accepted by public opinion to realize. This case study wants to explore what happen in the early stage taking of blue highway policy making which is influenced by rational analysis from bureau systems before entering that performing task of public policy.