The invention discloses a Chinese herbal 
medicine feed additive capable of promoting the growth of piglets and a preparation method thereof. The Chinese herbal 
medicine feed additive comprises the following 
raw material components in parts by weight: 50 to 80 parts of unpolished 
coix lacryma, 3 to 5 parts of 
semen nelumbinis, 3 to 5 parts of dark plum, 3 to 5 parts of rhizoma dioscoreae, 3 to 5 parts of 
semen raphani, 2 to 5 parts of rhizoma atractylodis, 2 to 5 parts of white lablab beans, 2 to 5 parts of 
semen ziziphi spinosae, 1 to 4 parts of hawthorn, 1 to 4 parts of poria cocos and 1 to 4parts of roasted malt. The preparation method comprises the following steps: 
drying, puffing and freezing the unpolished 
coix lacryma, dark plum, semen raphani, rhizoma atractylodis, white lablab beans, hawthorn and semen ziziphi spinosae, then carrying out 
reflux extraction by using an 
ethanol solution and drinking water in sequence, merging extracting solutions, then carrying out concentrationand 
spray drying to form 
dry powder, and then uniformly mixing the 
dry powder with smashed semen nelumbinis, rhizoma dioscoreae, poria cocos and roasted malt to obtain the Chinese herbal 
medicine feedadditive. The Chinese herbal medicine 
feed additive is scientific and reasonable in 
raw material composition, the preparation process is high in 
operability, the obtained additive is high in 
palatability, the digestive 
absorption capacity, 
immunity and anti-stress capacity of the piglets can be improved effectively, 
diarrhea of the piglets is prevented, and the growth of the piglets is promoted.