The invention provides sunflower head extract prepared by a crystallization enzymolysis method and a preparation method of the sunflower head extract. A sunflower head is a pure natural traditional Chinese medicine or a material both used as medicine and food; the sunflower head is scientifically extracted to prepare a functional health product both used as medicine and food, which has the effects of resisting gout, treating hyperuricemia, improving the immunity, lowering blood glucose and blood lipid, protecting kidney and liver, eliminating swelling, resisting inflammation and relieving pain and has the effects of dissolving uric acid calculus, lowering serum uric acid concentration, eliminating swelling and resisting inflammation, adjusting purine and uric acid metabolism, balancing in-vivo acid-base equilibrium and balancing in-vivo hormones; the product is safe, has no side effect, has remarkable health effect and can be eaten for a long period, so that a market development prospect is very good.