The invention discloses a compound premixed feed for solving the yellow fat meat problem of pigs and a preparation method thereof. The compound premixed feed comprises lysine, methionine, threonine, tryptophan, calcium hydrophosphate, compound trace elements, compound vitamins, tert-butylhydroquinone, 50% choline chloride, table salt and stone powder. The method comprises the following steps: (1)mixing vitamin A, vitamin B1, vitamin B2, vitamin B12, vitamin D3, vitamin E, vitamin K, zeolite powder and rice chaff to obtain a master batch A; (2) mixing the lysine, the methionine, the threonine,the tryptophan, the calcium hydrophosphate, the tBHQ, the 50% choline chloride, the table salt, copper sulfate, ferrous sulfate, zinc sulfate, manganese sulfate, 1% potassium iodate, 1% sodium selenite and the stone powder to obtain a master batch B; and (3) mixing the master batch A and the master batch B in proportion, wherein the variable coefficient of mixing uniformity is not higher than 7%.The compound premixed feed is reasonable in formula and convenient to use, effectively prevents the yellow fat meat of pigs, reduces the feed conversion ratio, and improves the economic benefit.