The sea area around Taiwan Island is subjected to severe pollution impacts; the marine ecology was already facing havoc. The ocean is constant flowing water, thus except the inland pollution, the pollutants around Taiwan Island also come from ocean drifting wastes, together with aggravation of recent global climate changes, those cross-regional pollutants pose threats to costal environment ecology and residents’ life. Traditional Hakka life respects and loves the heaven and earth, and pays attention to environment geomancy. They showed great toughness and resilience when dealing with environmental difficulties. Can the ethnic characteristic help to adapt environmental change? The research begins with the ecological catastrophe event of hundreds of packs of herbicides found at Kuanyin’s seashore. Other previous experiments estimated and verified the possibility of cross-strait path. This research further analyzes and evaluates the environment perception through depth interviews, so as to learn whether the Hakka residents in Kuan Yin Township have been aware of crisis brought by cross-regional pollution and ocean sustainable barrier so as to take actions. The cause and effect analysis framework of Driving Force-Pressure-State-Impact-Response（DPSIR）is applied, to highlight the importance of public ocean environment preservation under the local 21st century’s action platform, and improve the adaptability to the climate changes. Moreover, the government shall strengthen the observation and precaution of such ocean drifting objects, by giving the public early warnings and reduce the impacts of cross-regional pollution.