To estimate the genetic parameters for growth and nutritional quality traits in Tegillarca granosa， this study used the “Yue Qing Wan No.1”strain as parents and constructed 30 full-sib families using a nested mating design. Variance components and genetic parameters were estimated using a mixed linear model. The results showed that the heritabilities for shell length， shell height， shell width， and glycogen content were 0.23±0.08， 0.31±0.09， 0.30±0.09， 0.34±0.09， respectively， all indicating moderate heritability. The heritabilities for wet weight and hemoglobin content were 0.15±0.06， 0.16±0.06， respectively， indicating a low heritability. In contrast， the heritability for total protein content was 0.44±0.11， indicating a high heritability. These findings suggest that selectively breeding for shell length， shell height， shell width， total protein， and glycogen content would yield higher genetic progress. High phenotypic （0.66-0.86） and genetic （0.77-0.99） correlations were observed among the four growth traits. However， both phenotypic and genetic correlations among the three nutritional quality traits （hemoglobin， total protein， glycogen） themselves， and between these nutritional traits and the growth traits， were low （r<0.2）. This indicates that indirect improvement of nutritional quality traits through selection for growth traits would be difficult. This study provides essential genetic baseline data for the selective breeding of Tegillarca granosa targeting high-quality traits.