The invention discloses a hole sealant free molten zinc-aluminum corrosion resisting coating material and a preparation method thereof. According to the material, whiskers of a molten zinc corrosion resisting material are added to the surface of metal ceramic thermal spraying powder, and the whiskers of the molten zinc corrosion resisting material can exist on the surfaces of flattened thermal spraying particles after spraying. By means of the coating material, on one hand, a layer of molten zinc corrosion resisting material is attached to the surfaces of holes formed by the coating, wettability of molten zinc-aluminum or molten aluminum-zinc to a coating is reduced, and the situation that molten metal liquid corrodes the coating along the holes of the coating is reduced; and on the otherhand, whisker reinforcement is achieved between well-overlapped flattened particles, and the strength and thermal shock resistance of the coating are improved.