The invention discloses a piglet compound feed and a preparation method thereof. Taking 1000 kilograms of feed for example, the feed contains the following components: 530-587 kilograms of corns, 50-80 kilograms of extruded soybeans, 180-203 kilograms of bean pulps, 100-150 kilograms of rice bran, 10-12 kilograms of soya-bean oil, 7-8 kilograms of calcium hydrophosphate, 10-11 kilograms of mountain flour, 2.7-3.5 kilograms of lysine, 0.2-0.4 kilograms of methionine, 0.2-0.6 kilograms of threonine, 0.1 kilograms of phytase, 0.5 kilograms of clostridium butyricum, 10 kilograms of sodium humate, 0.5 kilograms of fulvic acid, 9-10 kilograms of zeolite, 2 kilograms of pig trace element, 1 kilograms of choline chloride, 0.2 kilograms of pig various vitamins and 3 kilograms of salt. The piglet compound feed provided by the invention has high stability, contains no medicated premix and has less environmental pollution. When the piglet compound feed is used for feeding the piglet, the diarrhea symptom can be efficiently relieved, the digestibility of nutrition constituent is high, the fed pig has delicious pork, contains no medicament residue and is low in feed ratio, and the economic benefit is high.