The invention belongs to the field of health care products, and in particular relates to an anti-alcohol and liver-protecting agent containing chicory nutritional components and a preparation method thereof. The hangover-protecting agent is prepared from chicory oligopeptide, chicory coumarin, traditional Chinese medicine extract, honey and deionized water according to a certain ratio, wherein the chicory oligopeptide and chicory coumarin are extracted from chicory root, Chicory oligopeptides are rich in amino acids such as alanine and leucine, which can promote the production of coenzyme NAD+ of alcohol dehydrogenase, which is beneficial to the catabolism of ethanol in the body, inhibits the increase of ethanol in the blood, and achieves the purpose of hangover; chicory Coumarin can speed up cell repair and has obvious protective effect on liver cells. The traditional Chinese medicine extract is prepared by extracting kudzu root flower, kudzu root, panax notoginseng, milk thistle, chrysanthemum, citrus aurantii and nutmeg. The invention can inhibit the gastrointestinal absorption of alcohol through the mutual compatibility of the effective components, accelerate the metabolism of the alcohol, reduce the damage of the alcohol to the liver cells, and can play a significant effect of sobering up and protecting the liver.