The invention relates to a 
feed additive for improving the energy intake level of 
beef cattle after delivery, and aims to solve the current problems of abnormal 
rumen fermentation, low crude 
fiber digestibility and easy ruminal 
acidosis when the energy intake level of the 
beef cattle after delivery is improved by greatly increasing the concentrate feed ratio in a daily ration. The 
feed additive is prepared from 
astragalus, pilose asiabell root, licorice, uniflower swisscentaury root, Chinese angelica, 
leonurus, 
acorn kernel 
meal, dried orange peels, mint, 
dandelion, parslane 
herb and shizandra 
berry which are dried, crushed and screened. The 
feed additive is added into a concentrated feed of the 
beef cattle after delivery and can be directly fed. The feed additive can improve the crude 
fiber digestibility while improving the energy intake level, does not influence the 
rumen fermentation, avoids the happening of the ruminal 
acidosis, and has the characteristics of convenient operation, high safety, easily available sources, low cost and the like.