This article reports on the results of study on the induction of spawning and the artificial breeding of the clam (Cyclina sinensis )in earth ponds and plant respectively. A breakthrough in its intensive rearing was achieved. The average yield of 0.26 cm aveage body length spats in 6988 ㎡ earth ponds was 3.1119×104/m3. The average yield of the spats was 36.73×104/m3 in breeding plant ponds with total seawater volume of 105 m3. Its average body lentgh was 0.41cm.