The present invention belongs to the fields of animal nutrition and feeds, and relates to a pork quality improving functional feed. The functional feed comprises the following components in parts by weight: corn, wheat, wheat bran, barley, buckwheat, soybean meal, alfalfa meal, sugar cane molasses, flaxseed meal, vegetable oil, calcium hydrogen phosphate, L-lysine sulfate, stone powder, sodium chloride, trace element premixes, compound vitamin premixes, betaine hydrochloride, a compound probiotic preparation, fructo-oligosaccharide, L-threonine, sodium bicarbonate, glycine iron, phytase, a compound enzyme preparation, small peptide selenium and L-tryptophan. By nutrition means of daily diet, each nutritional element of the daily diet is scientifically selected and reasonably matched, and ratios of each of the ingredients are optimized. The prepared pig feed recipe can effectively prevent production of swine PSE meat and improve the quality of the pork and edible value.