The present invention discloses a special Chinese herbal medicinal growth promoting agent for beef cattle and a preparation method thereof. The promoting agent comprises the following raw materials: prepared fleece flower root, radix astragali, Chinese angelica, radix codonopsis, stir-fried haws, malt and medicated leaven, stir-fried Chinese yams, stir-fried radish seeds, stir-fried chicken's gizzard-membrane, stir-fried semen quisqualis, licorice and raw white atractylodes rhizome. According to a principle of monarch, minister, assistant and conductant is used to conduct compounding; the various drugs are used together; and the special Chinese herbal medicinal growth promoting agent can promote the growth of the beef cattle, enhance body metabolism, regulate qi, promote digestion, help spleen, strengthen stomach, increase appetite, enhance digestion and absorption, promote blood circulation, enhance body immunity, improve weight gain of the beef cattle and improve product quality of beef. The growth promoting agent is a pure traditional Chinese medicinal preparation, does not contain antibiotics, is safe and convenient to use, has no toxic and side effects, ensures food safety, does not produce drug residues harmful to human body health, does not produce drug resistance, does not pollute the environment, does not cause a drug-induced disease, has a wide range of raw materials,and is low in cost, obvious in effect and a major innovation in the growth promoting agent for the beef cattle.