The invention discloses high-nutrition healthcare peanut oil and a preparation method thereof. The high-nutrition healthcare peanut oil is prepared from the following raw materials in parts by weight:100-250 parts of peanut kernels, 30-45 parts of peony seeds, 5-14 parts of coconut, 3-15 parts of olive fruit, 3-14 parts of avocado, 1-5 parts of grape seeds, 2-5 parts of mung bean, 2-8 parts of star anise, 3-10 parts of herba thymi vulgaris, 3-12 parts of rosemary leaves, 1-5 parts of sweet osmanthus flower, 0.01-0.15 part of vitamin C, 2-8 parts of herba coreopsis tinctoriae, 2-5 parts of rhizoma anemarrhenae, 1-4 parts of radix salviae miltiorrhizae, 1-3 parts of fructus chebulae and 0.1-0.35 part of antioxidant. According to the high-nutrition healthcare peanut oil and preparation method thereof disclosed by the invention, the preparation method is simple in process; the obtained peanut oil has high nutrition and strong oxidation resistance and also realizes the healthcare functionsof clearing heat and reducing fire, removing toxin and resolving dampness and lowering blood pressure and blood lipid.