The invention discloses a feed formula for meat ducks and a preparation method of feed. The feed formula consists of the following raw materials in parts by weight: corn husk, brewer grains, rice bran, broken rice, fish meal, carrots, peanut shells, cassia seed, chrysanthemum, fructus schisandrae, longan aril, hawthorn leaves, sunflower faceplates, commelina diffusa, black bark root, magnolia bark, lilies, towel gourd flowers, cherry pit, impatiens balsamina and fortune loosestrife herb. After the feed is used for feeding the meat ducks, the breeding period can be obviously shortened, the feed cost can be saved, the duck meat is fine and tender, and Chinese herbal medicines such as the chrysanthemum, the fructus schisandrae, the longan aril and the hawthorn leaves are added into the feed formula, so that the sleeping of the meat ducks can be improved, the vitality of the ducks can be improved, the appetite of the meat ducks can be promoted, and the meat ducks grow fast.