The marine environmental incident has seriously affected the material and spiritual life of people in Hai An commune, Hai Lang district, Quang Tri province. The incident that caused mining operations seemed to be completely stalled. Therefore, the study not only focuses on assessing the impact of the Formosa incident on physical and mental life, but also understand response solutions for fishing households to deal with the event. The research results show that the marine environmental incident has led many labourers in the fishing industry to be underemployed, out of work and reduced income significantly. At the same time, we also find response solutions to overcome difficult times due to this incident. More specifically, it is clear that no changes in livelihoods have occurred in this group. Most fishing households do not want to change their jobs but continue to maintain the old livelihood strategy.