is mainly distributed and cultured in the brackish waters of the south China coast. retains obvious local characteristics and is the most important oyster culture species on the southern coast of China. The color of the soft body is milky white, and has the advantages of individual hypertrophy, rapid growth, high yield, excellent taste, and high market value. As an important morphological trait of oyster, shell type is one of the targets of oyster breeding; the shell shape is more attractive to consumers, and if it is related to meat yield, it can increase the oyster's commodity value and present a greater economic benefit. At present, no studies have reported the breeding of oyster shell traits in . The aim of this study was to cultivate varieties with fast growth, high quality, and strong resistance, and to promote the stable, healthy, efficient, and sustainable development of the oyster farming industry of with a deep-cupped shell shape and improved growth traits, a breeding program of family selection was initiated based on the wild population of this species in Taishan Town, Guangdong Province. The shell depth index was used as an indicator, and 30 full-sib families and one control group were established using a nested design method with shell type and growth being the major breeding objectives. The growth and survival performance of each family and control group were evaluated in the larval and juvenile stages. The results showed that the average growth traits and survival rates of each family were higher than those of the control group during the whole growth period. In the larval stage, the average shell height, growth rate, and survival rate of all families were higher than those of the control group. The average shell height of all families was higher than that of the control group by 3.78%-7.73%, the growth rate increased by 7.86%, and the survival rate increased by 2.85%-7.32%. In the juvenile stage, the average values of shell height, shell length, growth rate, and survival rate of all families were higher than that of the control group, shell height increased by 5.23%-16.32%, shell length increased by 7.94%-10.69%, growth rate increased by 9.55%-20.16%, and the survival rate increased by 3.45%-12.25%. The growth traits and survival performance of different families also differed markedly in different stages. The average growth traits, growth rate, and survival rate of G1 were significantly higher than those of all family and control groups in the whole juvenile stage. The shell height, shell length, shell width, index of shell depth, total weight, shell weight, meat weight, and survival rate of the G1 family compared with the average of all families increased by 9.83%-54.75%, which was higher than the average of the control group, with 23.34%-80.77% at 12 months. At the same time, G3, G10, G12, G15, G19, G23, and G26 also presented greater growth and survival advantages during the juvenile stage. Studies have shown that breeding populations of families with a deep-cupped shell shape have great advantages in terms of growth traits and survival performance. G1, G3, G10, G12, G15, G19, and G23 can be used as breeding materials for the late development of deep-cupped shells of with excellent growth performance. This study provides a theoretical basis and useful practical materials for the cultivation of a new strain of with a deep-cupped shell shape and excellent growth traits.