The invention discloses uric-acid-reducing peptide chelated calcium as well as a preparation method and an application thereof. The preparation method comprises steps as follows: mincing saury, then heating and stirring the saury, adjusting the pH value to 4.2, performing centrifugal separation, taking a precipitate, adding protease for enzymolysis, centrifuging an enzymolysis product, and taking a supernatant, that is, a saury uric-acid-reducing peptide solution; adding a calcium chloride solid, then adding absolute ethyl alcohol while stirring, performing centrifugation, and performing vacuum drying on a precipitate to obtain a uric-acid-reducing peptide chelated calcium product. Active fragments in saury protein are released with a modern biological enzymolysis technology, and then the protein peptide chelated calcium product is prepared through wet process chelation. Bioactive peptide fragments released from the saury protein have the obvious uric acid reducing effect, meanwhile, protein peptide has the better chelated calcium effect, the prepared uric-acid-reducing peptide chelated calcium product has the significant uric acid reducing effect, and meanwhile, the problem of normal absorption and utilization loss of calcium crucial for maintenance of bone and muscle functions is solved.