and provide basic data for the breeding technology, an experiment was conducted where matured zygotes were harvested by artificial inducing spawn and the morphology of embryo and pelagic larva of was observed and recorded under microscope in this study. The effects of seawater temperature on growth and development of the pelagic larva was studied through experimental ecology methods. esults showed that stimulation time for artificial spawning by air-drying should be 12 h when flowing water stimulation was 4 h. The demersal eggs were shaped ellipse (82.6 μm±3.2 in diameter), while the sperms were the type of flagellum (about 50 μm in total length). The embryonic development from zygote to D-larvae stage (104.0 μm±4.3 μm in shell length), creeping larvae stage (255.8 μm±15.0 μm in shell-length) and early juvenile stage (329.1 μm±5.8 μm in shell length) lasted for 20.5 h, 20 d and 36 d, respectively. The results testified that seawater temperature is one of the crucial factors on the growth and development of the pelagic larva. The suitable temperature was from 15℃ to 20℃. The abnormality rate of the larvae at 15℃ was significantly lower than those at 20℃. The highest growth rate was 5.4 μm/d in group 20℃. In 25℃ and 30℃ groups, the abnormality rates were significantly higher than those at 15℃ and 20℃, and the larvae all dead at the sixth day and the fourth days respectively. The larva showed stronger tolerance to lower temperature than higher temperature.