In the experiment the same culture population of 1000 individuals of Argopecten irradians concentricus Say was divided into 3 groups according to shell length: large group (shell length 58.3-61.9mm), middle group (shell length 49.5-50.8mm) and small group (38.9-41.1mm), and 3 individuals, which as parents were sexually matured and of the same age, were chosen from 3 groups each, autogamy experiments were carried out within each group of parents selected, respectively. Under identical environmental and experimental conditions， based on the comparisons of differences between 3 groups in terms of such indices as insemination rate, hatching rate, juvenile survival rate, survival rates across nursing period and across formal culture period, daily growth rates of shell length, shell height, survival rate and responses to selection, the effect of parental selection on the growth performance of self-fertilized progeny were examined. Results showed that large-size parents were better than middle ones (P<0.01); middle-size parents were superior to small-size ones (P<0.01). Responses to selection of shell height, shell length and wet weight for large-size parents were 6.0mm, 5.4mm and 6.3g respectively; -0.4mm, -0.1mm and -0.7g respectively for middling-size parents, and -4.7mm, -5.3mm and -7.6g respectively for small-size parents. Realized heritabilities of shell height, shell length and wet weight are 0.52, 0.49 and 0.40 respectively. Results showed that parental selection of Argopecten irradians concentricus Say had great effect on the growth performance of self-fertilized progeny(P<0.01), the self-fertilized progeny of large-size parents displayed marked growth advantage, and the strategy of truncation selection is effective and should be adopted practically. Key words： Argopecten irradians concentricus Say, Selection, Self-fertilization, first filial generation, performance