The experimental larvae and. spat were abtained by spawning and catching of the breeders from an area with a salinity of 26 .0-28.0‰，The effects of temperature and salinity on the growth and development of the larvae and spat was observed. The IarG"ae were cultured in sea, water of salinity range between 8.4 and 32 .4‰ showed good results, the optimum salinity being 12 .4‰.The suitable and optimum salinity range for spat were 8.4-28.4‰and 12.4‰ respectively.Temperature also has effect on the larvae and spat, with the difference of salinity.The suitable and optimum temperature range for the free-swimming larvae were 17--25℃ and 21℃ respectively, and that far spat were 13-25℃ and 17℃, in a sui-table salinity of 28.4‰，Larv ae and spat all show ed low tolerance when water tempperature was over 25℃. In optimum salinity (12 .4‰)，the optimum temperature for larvae and spat were 25℃ and 21℃ respeotively. The larvae can tolerate to high,salinity than to low salinity.