The invention provides a preparation method of a traditional Chinese medicinal preparation for treating chicken
diarrhea. The preparation method comprises the following steps: firstly, taking radix aucklandiae,
myristica fragrans, radix angelicae, mangnolia
officinalis, perilla leaf,
pogostemon cablin,
pinellia and poria cocos, mixing, crushing, adding water, heating, extracting, concentrating an extract, and adsorbing a concentrate by using macroporous adsorbent resin to obtain a permeate; secondly, taking argentina anserina, crushing, percolating by using an
aqueous ethanol solution, extracting a percolate by using
diethyl ether, and concentrating an extraction solution under reduced pressure to obtain an extract; thirdly, mixing the permeate with the extract, adding into an aqueous beta-
cyclodextrin solution, stirring at the constant temperature of 50-60 DEG C, refrigerating in a refrigerator with the temperature of 4 DEG C, performing
spray drying, and granulating; finally, mixing obtained granules with
soybean lecithin, a
diluent, a binder and a
wetting agent, and granulating to obtain the traditional Chinese medicinal preparation. The traditional Chinese medicinal preparation has broad-spectrum effects of resisting viruses,
bacteria, fungi, spirochetes and the like, has a body
immunity-adjusting function, and can improve the
pathogen resistance of a chicken while the chicken
diarrhea is effectively treated.