A method for breeding blue crab families comprises the following steps: S1, collecting blue crabs bred in different populations of China to construct base groups, and conducting
genetic diversity comprehensive evaluation, S2, respectively selecting parent crabs from the different populations, establishing the families according to the complete
diallel cross mode to grow larvae and
breed in a standardizing mode, and calculating
hybrid heterosis rates, S3, utilizing the crabs with outstanding
hybrid heterosis to mate and combine, constructing the families through indoor artificial directional
mating to grow the larvae and
breed in the standardizing mode, and twice screening
stocking families, S3, over-wintering mated female crabs of parent groups bred indoors of the
stocking families, S4, selecting the parent crabs with high egg-laying rates from each family in following spring to grow the larvae and
breed in the standardizing mode, and utilizing the breeding method to continue to screen the families. By means of the method for breeding the blue crab families, the growth rate and the
survival rate of the blue crabs are used as indexes, blue crab families breeding is conducted, family economic characters are comprehensively evaluated, according to breeding results, blue crab norms are improved in the harvesting process, the breeding
survival rate is improved, so that breeding benefits are greatly increased, and deviation caused by
single character breeding is avoided.