Abstract: Artifical reproduction of Babylonia areolata and B. formosae were taken in this study. The egg capsules of this two Babylonia were held in water temperature 23.61.1℃, the hatching time for B.areolata was 7 d and the shell length of firstborn larvae was 482.710.6 m, while the hatching time for B. formosae was 8 d and the shell height of newly hatching larvae was 398.210.3 m. The larvae were reared at 0.1~0.2 indmL-1 in water temperature 25.20.9, the growth rate of larval shell height for B.areolata was 33.6 md-1 and larvae began metamorphosis when the larval shell height reached 1 323.9118.6 m after rearing 18 d, while the growth rate of larval shell height for B.formosae was 25.3 md-1 and larvae began metamorphosis when the larval shell height reached 955.5174.4 m after rearing 16 d. The juveniles were reared at 2 100 indm-2 in water temperature 26.50.7℃, the growth rate of shell height for B.areolata and B. formosae were 0.21 and 0.20 mmd-1, respective.