Abstract: Under the water temperature and pH ranges of 28.2~29.7℃ and 7.6~8.3, respectively, study on the suitable and optimal salinities respectively for survival and growth of Babylonia areolata was investigated using experimental ecological methods, aiming at providing scientific evidence for its aquaculture. The salinity at which juvenile mortality of 50% in 120 hours occurred in experiment was defined as the critical survival salinity, and the salinities in between the highest and lowest were regarded as the suitable survival salinities. The salinity responsible for 30% of the highest growth rate was defined as the critical growth-suitable salinity, and salinities in between the highest and lowest were regarded as the growth suitable salinity. Salinities at which the highest survival or growth rates among groups were not significantly different by multiple comparison were set to be the optimal survival or growth salinities. Results showed that the suitable survival salinity for B.areolata juveniles was 19.18~41.39, the optimal survival salinity was 26.0~34.4. The growth suitable salinity was 19.28~39.96, the growth optimal salinity was 26.0~31.6. When salinity was beyond the optimum, the juveniles were more sensitive to low salinity.