Temperature and salinity show a marked influence upon the incubation perindand nauplius development. If the temperature is higher, the larval development willbe faster and the time needed is shorter. When the eggs and nauplius are placed under the same salinity conditions, andsuitable temperature, the larvae are strong, and the survival rate is high. The mostsuitable temperature for hatching and nauplius stage is 28°±0. 5℃, but water tempera-ture of 35. 5°±0. 5℃ is harmful to the hatching and larval development. If the water salinity is 28. 59‰ to 35. 43‰, the hatching rate is high and the lar-vae are robust. In 20.81‰ salinity, eggs can not be hatched out. In 40.38‰ salinityand temperature at 24°± 0. 5℃ to 28 ±0. 5℃, although incabation is possible but larvaehatched are so weak that they are unable to swim. At the temperature 35. 5°±0 .5℃and the salinity 40. 38‰, the eggs can not be hatched. The nauplius can develop into zoea when the water salinity in 23. 15‰, 28. 59‰or 35. 45‰. In salinity 40. 38‰, the nauplius can develop into zoea, but they are una-ble to swim and the suvival rate is low. In suitable salinity and temperature hatching is comparatively fast, the survival rate is higher.