The invention relates to the technical field of oil product manufacturing, in particular to a preparation method for an oil with seafood flavor. The oil with the seafood flavor comprises the following ingredients: vegetable oil, sea shrimp, sea shell, sea fish, various seafood offals, ginger, and green onion. The preparation process comprises the following steps: cleaning the ingredients, removing guts, scales and shells, smashing into a thick liquid, and performing pretreatment, boiling, filtration and packaging to obtain the product oil. Through the implementation of the invention, a great amount of inferior-quality seafood and offals, which cannot go to the market, are adopted, so as to develop the functional health-care edible oil with the seafood flavor by utilizing unique flavor, nutrition, and health-care effect of the seafood; the oil product has a umami taste, has efficacies of nourishing the stomach, improving potency, nourishing Yin, invigorating stomach, eliminating phlegm, relieving convulsion, and the like, thereby having a wide market prospect.