The invention discloses a herring feed and a preparation method thereof. The herring feed comprises the following components by weight: 10-15 portions of rice bran, 10-15 portions of sweet potato powder, 5-10 portions of wheat starch, 10-15 portions of rapeseed powder, 15-25 portions of wheat bran, 2-5 portions of shrimp powder, 1-2 portions of snail meat powder, 1-2 portions of earthworm powder, 10-15 portions of hollow lotus leaves, 40-60 portions water and an accessory bag. The preparation method is as below: adding water into the rice bran, sweet potato powder, wheat starch, rapeseed meal, wheat bran, shrimp powder, snail meat powder and earthworm powder, mixing to form a paste, and placing at the temperature of 21-28 DEG C for 2-3 h to obtain a mixture A; cleaning the hollow lotus leaves, crushing the leaves into a paste, adding the accessory bag, and evenly stirring to obtain a mixture B; and fully mixing the mixture A and the mixture B, extruding into thin rods, baking, and crushing into granules. The invention has the advantages that the feed does not contain additives, and is supplemented with hollow lotus leaf to prevent oral ulceration and intestinal flatulence of herring; and the herring fed with the feed has tender mouth feel and rich nutrients.