The invention relates to a traditional Chinese medicine for increasing the feed intake of chicken and a preparation method thereof. The traditional Chinese medicine is prepared from the following raw pharmaceutical materials in parts by mass: 90-100 parts of astragalus roots, 70-75 parts of codonopsis pilosula, 55-60 parts of white atractylodes rhizome, 51-55 parts of dried tangerine peel, 34-38 parts of atractylodes rhizome, 34-38 parts of magnolia barks, 68-73 parts of fried hawthorn, 68-73 parts of fried malt, 20-25 parts of prepared liquorice roots and 68-70 parts of fried medicated leaven. The preparation method of the traditional Chinese medicine comprises the steps of mixing the raw pharmaceutical materials according to the ratio, slicing, and decocting for drinking. Compared with antibiotic feed additives, the traditional Chinese medicine has the advantages that no residue is caused, the raw materials are easily obtained, the cost is low, the use is convenient, and no influence on the quality of chicken of table poultry is caused; moreover, confirmed by tests, the traditional Chinese medicine is capable of improving the weight gain of the table poultry, increasing the growth rate of the table poultry, increasing the feed conversion efficiency, increasing the feed / chicken ratio, reducing the feed cost, improving the immunity of the organism, enhancing the disease resistance of the table poultry and increasing the economic benefit of culture.