The invention relates to a special feed additive for silver carp culture. The special feed additive is characterized by being prepared from the following raw materials in parts by weight: 20 to 25 parts of ginkgo leaf, 7 to 12 parts of herba houttuyniae, 12 to 15 parts of folia eriobotryae, 7 to 9 parts of folium eriobotryae, 5 to 9 parts of areca catechu, 9 to 12 parts of cyrtomium fortunei, 4 to 8 parts of poria cocos, 3 to 6 parts of cinnamomum cassia, 7 to 9 parts of Chinese red pepper, 4 to 8 parts of pericarpium citri reticulatae viride, 5 to 7 parts of yeast powder, 4 to 6 parts of dried silkworm chrysalis meal, 7 to 8 parts of chicken blood powder and 9 to 12 parts of wheat protein powder. The special feed additive for silver carp culture, provided by the invention, accords with the green and safe development concept of the modern agriculture, can effectively promote growth of silver carp, increases the growth rate and improves disease resistance of silver carps, can reduce use of a sanitizer, and chemical drugs in the production process, reduces the production cost and is widely acclaimed by the fish farmers.