When public works are conducted, people recently tend to ask their entrepreneur for keeping good natural environment as much as possible. On that condition, we studiedthe subject when we introduce the concept of mitigation in shore protection project by Ministry of Construction, which has ensured the public safety behind the shore fromnatural disasters like storms. Through our study, numerical evaluation of physicalcondition and living features along sandy coast was tried. Finally a flow chart of the project with mitigation was experimentally gained when the method of their evaluation is established.