The sea around Taiwan is a hot spot for shipwreck. Once the heavy oil contained in a ship has leaked due to accident, it often affects the ecology of surrounding sea and fishermen's livelihoods. However, due to the lack of information on fisheries in inter-coastal fishing, there is no clear evidence of loss of fishery and no reasonable follow-up compensation. Therefore, how to establish the data of the fishing and fishing resources and assess the damage of the fishing industry should be one of the important tasks in tackling the oil pollution accidents in the future. In this study, we monitored and assessed the ecological impact of the coast of Shimen District of New Taipei City after the incident of T. S. Taipei freighter oil spill. Our results showed that one year after the event, no relevant mineral oil was detected in the water of contaminated sea area. The monitoring indicators of ecosystem are also close to balance. The resources of the main intertidal fishery species,Cellana toreumaand large-scale algae, all have seasonal variations. The rich period ofCellana toreumawas in May and June. The large algae had high production in January to May. In the case of the Lao-Mei stone channel, the annual production of large-scale algae can reach 79.19 tons, with an annual output value of 15.838 million yuan. In September 2016, the income of fishery association members in the area rose more than $ 5,000, the highest level since November 2008.