Disclosed are a microcapsule fat powder of Ω3-enriched meat, egg and milk and its preparation method, and the powder includes a water-soluble wall material and an Ω3 oil core material embedded in the wall material. The water-soluble wall material is prepared by mixing dextrin, water-soluble syrup, whey powder or chitosan with starch paste, and the Ω3 oil core material is prepared by mixing linseed oil, deep sea fish oil or algae oil with a composite emulsifier which is stearic acyl lactylate. The microcapsule fat powder can be combined with intestinal and pancreatic lipases very easily to improve the digestion, absorption and utilization of Ω3 oils.