To clarify the spatio-temporal dynamics of larval fish assemblages in the northeastern waters of Taiwan, larval fishes were collected from the 36 and 38 stations by R/V Hai-Chieng with Bongo or ORI nets with vertical towing during March and July 2005 and August and September 2006, respectively. Water temperature, salinity and water volumn filtered were also measured in the field. Hydrography of the northeastern waters of Taiwan was very complexity and varied with season. Water temperature and salinity were much higher in south and lower in north and gradually increased month by month. A total of 14,526 eggs and 9,762 individual of fish larvae belonging to 99 families and 255 taxa were collected. The dominant species were Scomber japonicas (March), Scomber australasicus (April), Auxis sp. (May and June), Benthosema pterotum (July) and Engraulis japonicus (August and September). The dominant community of larval fish transported from south to north conspicuously by waters changed. The species composition and abundance of fish larvae changed drastically with months and locations. The spawning season of the fish and the meandering of Kuroshio Current in the waters off NE Taiwan were influenced the temporal succession and spatial distribution of the larval fishes.