The invention discloses a
crassostrea gigas
offspring seed cultivation method capable of improving
immunity of D-type larvae, which comprises the following steps: in the
crassostrea gigas
offspring seed cultivation process, when
crassostrea gigas fertilized eggs develop to the initial stage of the D-type larvae, culturing the D-type larvae for 24 hours by using a culture
water body containing
ammonium chloride with the final concentration of 0.053 g / L, and then transferring the D-type larvae into a culture
water body without
ammonium chloride to be continuously cultured. According to the invention, the
autophagy level of the D-type larvae can be obviously improved, the proliferation of blood lymphocytes of the D-type larvae is promoted, and the immune response capability of the D-type larvae to viruses is enhanced. In addition,
ammonium chloride can also induce expression of
inflammation-related genes of the D-type larvae, so that the
immunity of the D-type larvae of the crassostrea gigas is comprehensively improved, the death rate of the larvae is effectively reduced, and the quality of crassostrea gigas fries is improved. Meanwhile, the method has the advantages of simplicity in operation, low cost and the like.