was introduced to China from South America in 1991. The individuals chosen for this experiment were the F3 offspring of the largest scallop, in terms of shell height, bred from the years 2005 to 2007. Twelve adults were randomly selected from this population with a selection pressure of 5%, and 12 self-fertilizing, hermaphrodite families were established. The control group (L₀) was produced by mixed crossing of the F3 offspring of this scallop. Kung breeding and comprehensive evaluation values were evaluated in the self-fertilizing family and the control group by inspecting indices such as growth and survival of the offspring. The aim was to breed excellent self-fertilizing scallops and provide the material basis for genetic improvement of the stock. The results showed that there were no significant differences between the fertilization rate of the self-fertilizing families and the control group. However, the hatching rates were significantly higher( followed. In the larva stage, the daily shell length growth was significantly higher in B₃ and C₂ than in the control group, but was significantly lower in the other self-fertilizing families ( were significantly higher than the control group, yet they were significantly lower than the control up to 4 months old (and C₂ displayed significantly higher growth rates than the others in terms of shell height, shell width, and body weight (0.05). The comprehensive evaluation and breeding value of the four traits of the different family lines were B₃ were two excellent self-fertilizing families. In the 12 families, self-fertilization depression occurred to some extent in nine, one failed and two (B₃, C₂) exhibited superior growth and survival. We conclude that it is feasible to establish high quality self-fertilizing families with large-size shell height, improving breeding efficiency, and shortening the breeding period.