There is provided a coenzyme Q10-containing composition having a high coenzyme Q10 content and excellent stability and bioavailability of coenzyme Q10, without using synthetic emulsifiers such as glycerin fatty acid esters, polyglycerin fatty acid esters, organic acid monoglycerides or sucrose fatty acid esters.The coenzyme Q10-containing liquid composition is obtained by dispersing and emulsifying coenzyme Q10 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 Q10-containing solid composition.