The planning offshore wind power fields locate in the western waters in Taiwan, and it is also the coastal fishing ground. To understand the effects of the marine environment and fishery resources with the installation of the offshore wind turbines. We continued to investigate the marine environmental factors, the bottom trawl study, and the fishery survey this year. The monsoon and current affected the marine environment in the western water of Taiwan. The coastal water carried the rich nutrients during the survey period in summer. We collected 43 families of biology samples, including 28 families of fish, 11 families of crustaceans, 3 families of Cephalopods and 1 family of the other species. The species collected were almost different at the same station in the different voyages. It showed seasonal changes in the biota in Changhua offshore wind farms. It is suggested that we need to collect the data of the marine environment, biology species and fishery resources in the offshore wind farm and understand the variation of the marine ecosystem.