Grey mullet (Mugil cephalus) usually migrate southward along the China Coastal Current to Taiwan for spawning in winter. However, the long-term fishing and climate change have led to a continuous decline in catches since from the 1980s. The average annual catches had also shown a sharp fluctuation in the past two decades. This study analyzes the data of mullet catches since 2011 and the monthly average sea surface temperature data from 2015 to 2019. The results display that the grey mullet resources had gradually recovered since 2012. The grey mullet fishing method most used drift gillnets, and others included ringnets and lampara net. The 21°C isotherm display the suitable spawning migration condition for the grey mullet in the Taiwan Strait in the winter of 2015 to 2019. The fishing ground of grey mullet had a tendency to move northward year by year. On the other hand, there were completed the basic grey mullet fishing and sea condition quick report model and the knowledge platform construction plan, including structure, content, functional attributes, levels, construction schedule, and quick report release model. The realtime release channel will use the official website of Fisheries Research Institute (FRI), mobile messaging and fax.