The present invention discloses a chrysanthemum eyesight improving sweet potato powder and a preparation method thereof. The sweet potato powder is characterized by being composed of the following raw materials in parts by weight: 200-210 parts of sweet potatoes, 25-30 parts of sweet potato leaves, 10-11 parts of coriandrum sativum, 10-11 parts of hazelnuts, 1-2 parts of leaf lard, 9-10 parts of wheat germ, 20-22 parts of cherry juice, 4-5 parts of wheat gluten, 7-8 parts of eleacharis dulcis flour, 10-11 parts of plum powder, 3-4 parts of sargassum powder, 4-5 parts of chrysanthemums, 3-4 parts of semen celosiae, 4-5 parts of cuscuta chinensis, 3-4 parts of cortex lycii, 1-2 parts of ziziphora clinopodioides, 2-3 parts of passiflora wilsonii, 200-210 parts of sand, 15-20 parts of wine lees, 30-32 parts of maltose, and 8-9 parts of nutritional additives. The maltose is heated and mixed with heated Chinese herbal medicines, sand, and wine lees to bond into granules, and then heated together with sweet potatoes, and thus the sweet potatoes can be heated evenly and merged with the aroma of wine lees, have unique flavor, and are rich in carotene which can provide rich vitamin A, and the matched traditional Chinese medicine ingredients penetrated in the heating process can play the efficacy of improving eyesight.