The present invention mainly relates to the technical field of wheat deep processing and discloses a processing method of zinc-enriched cake powder. The processing method comprises the following steps: wheat grains are washed clean, the washed wheat grains are crushed, zinc malt is added, the materials are steamed to be well-done, lactic acid bacteria are added into cooked wheat residues to be subjected to a first fermentation, then corn and sweet potato starch are added, the materials are subjected to a second fermentation, a dietary alkali solution is added, the materials are subjected to freeze-drying, soybean hull powder, glutathione and nisin are added, and the materials are packaged. The zinc-enriched cake powder is simple in preparation, convenient to use, and balanced in nutrition, has an organic zinc content of 31.2 mg / 100 g, promotes the absorption of nutrients, enhances the resistance, and delays aging. The cakes are fragrant, sweet and delicious, and soft and delicate, and have economic income increased by 10.3%. The whole wheat grains are crushed, the zinc malt is added, the materials are steamed, all the nutrition in the wheat is fully utilized, production costs are saved by 11.6%, and the zinc-enriched cake powder can increase the fragrance and nutrition, and promote digestion and absorption.