There is provided a coenzyme Q 10 -containing composition having a high coenzyme Q 10 content and excellent stability and bioavailability of coenzyme Q 10 , without using synthetic emulsifiers such as glycerin fatty acid esters, polyglycerin fatty acid esters, organic acid monoglycerides or sucrose fatty acid esters. The coenzyme Q 10 -containing liquid composition is obtained by dispersing and emulsifying coenzyme Q 10 in an aqueous liquid containing a water-soluble substance consisting of octenylsuccinate starch and dextrin, and glycerin. The liquid composition may be dried to prepare a coenzyme Q 10 -containing solid composition.
