The present invention relates to a functional engineered rice having alcoholism relief and liver protection functions for those drinking alcohol over an extended period of time or drinking alcohol excessively, and preparation method thereof. The engineered rice comprises six starting materials: coarse rice powder, isolated soy protein, kudzu root extract, corn oligopeptide, purple sweet potato powder, and hawthorn extract, and is prepared by: premixing the starting materials; employing a double screw extruder to conduct texturized processing and forming under high temperature and high pressure; and then drying, dedusting and packaging.