The present invention relates to the technical field of food processing and particularly to an alcoholism-preventing and liver-protecting milk tablet and a preparation method thereof. The milk tabletcomprises the following raw materials in parts by weight: 3-7 parts of milk powder, 0.5-1.5 parts of a semen hoveniae extract, 1-5 parts of lemon juice, 0.005-0.02 part of vitamin B1, 0.5-2 parts of maltodextrin and 0.5-2 parts of sucrose. The milk powder has effects of benefiting the stomach, supplementing deficiency, promoting salivation, moistening dryness, and removing toxins; the semen hoveniae extract has functions of preventing alcoholism, quenching thirst, relieving restlessness, causing diuresis and protecting liver; the lemon juice has functions of promoting salivation and quenchingthirst, and strengthening the stomach and stopping pains and at the same time can improve mouthfeel of the milk tablet; and the vitamin B1 can accelerate alcohol metabolism process, eliminate free radicals produced in an ethanol metabolism process, reduce liver load, and achieve a purpose of protecting the liver. Therefore, the prepared milk tablet can effectively relieve symptoms of dizziness, vomiting, etc. caused by drinking wine, has effects of benefiting the stomach, relieving toxins and protecting the liver, the raw materials are also easy to obtain, the preparation method is simple, andthe product is convenient to eat and cheap in price.