To provide Ubidecarenone compositions being excellent in absorbability into the body, highly stable at low temperatures, keeping clear external appearance, and being liquid at ordinary temperature. Ubidecarenone is dissolved in oils by which the accumulation of fats in the body is low, for example, triglyceride, which contains a short chain fatty acid as constitutive fatty acid, preferably SALATRIM, or diglyceride, for example, a hybrid glyceride composed of a middle chain fatty acid and a long chain fatty acid.