Disclosed is a composite edible oil and the manufacturing method thereof. The ingredients of the composite edible oil include peanuts, hempseeds, black sesame, pumpkinseeds, walnuts, linseeds, perilla seeds, and rosemary to maintain the freshness of the composite edible oil. The ratio of the monounsaturated fatty acid to the polyunsaturated fatty acid in the oil is around 1:1, and the ratio of ω-6 to ω-3 polyunsaturated fatty acid is around 4:1. Under the condition that the reference daily intake of composite edible oil should not exceed 20 ml-25 ml, the composite edible oil provides a scientific ratio among ω-3-ω-6 and ω-9 fatty acids for helping human bodies to reach nutritious equilibrium. By using UV degradation, the peroxide value, aflatoxin amount,and acid value contained in the composite edible oil meet the statutory requirements without the need of :fining process. Thus, the posite edible oil preserves beneficial substances, such as vitamin E.