The invention provides a Chinese herbal feed additive and a manufacturing method of the feed additive, and belongs to the field of animal feed additives. The Chinese herbal feed additive is prepared by mixing the following raw materials: radix bupleuri, astragalus mongholicus, codonopsis, poria, atractylodes, licorice, angelica, rehmannia glutinosa, white peony root, glossy privet fruit, hawthorn, medicated leaven, malt, rhizoma atractylodis, oriental wormwood, dodder, fructus cnidii, herba epimedii, pulsatilla, golden cypress, folium isatidis, folium artemisiae argyi, ash bark, cortex ailanthi, vitamin E, vitamin B2 and methionine. When pestilence happens, based on the formula above, the following raw materials can be added: dandelion, honeysuckle and fructus forsythiae. The manufacturing method comprises the steps of drying, weighing, mixing, crushing, screening and mixing the Chinese herbal raw materials. When applied to the feed of laying ducks, the Chinese herbal feed additive has the functions of replenishing Qi to invigorate the spleen, regulating and enriching blood, retaining Yin and nourishing blood, nourishing liver and relieving pain, helping digestion and invigorating stomach, clearing away heat and toxic materials, and inducing diuresis and reducing edema, can improve resistance of the laying ducks, prevent intestinal tract and oviduct inflammation, obviously improve the laying rate of the laying ducks, and reduce the feed-gain ratio.