Sea cucumber steamed egg custard and preparation method thereof

The invention discloses a preparation method of sea cucumber steamed egg custard. The preparation method comprises the following steps of: S1, carrying out surface pretreatment on sea cucumbers, and soaking the sea cucumbers subjected to the surface pretreatment; S2, uniformly stirring 35-55 parts by weight of eggs to obtain whole egg liquid, and pouring the whole egg liquid into a blending tank; S3, adding 40-75 parts of purified water at the temperature of 85-95 DEG C while the whole egg liquid in the blending tank is stirred, and adding 0.5-3 parts of edible salt into the blending tank within 1 minute after the purified water is added, so as to obtain blended liquid; S4, subpackaging the sea cucumbers soaked in the step S1 into each container, then, filling each container with the blended liquid obtained in the step S3, and carrying out sealing after the blended liquid is filled, wherein the part addition ratio of the sea cucumbers to the blended liquid in each container is 1: (0.1-10), and the temperature