The invention relates to the technical field of feed additives, in particular to a special post-sprayed vitamin premix material for aquatic feed. The pH of the vitamin premix material after being dissolved in water is nearly neutral and acidic, a stable environment is provided for various vitamins, and the damage of strong-acid and strong-alkali extreme environments on the vitamins is avoided; and a composite protective agent can enable the vitamin solution to form a stable and uniform solution, an effect for protecting the vitamins sprayed onto the surface of feed can be realized, the dissolve-loss ratio of the vitamins and the loss rate in the transportation process can be effectively reduced, and an unexpected technical effect can be achieved.