The present invention provides a practical preparation form of Tamibarotene and dosage form thereof, which exhibit high absorptivity by the body with minimized toxicity, and which are safe and stable without any risk of contamination. It is provided a Tamibarotene capsule preparation which encapsulates a composition comprising an oil component as its base and Tamibarotene as an active ingredient dissolved in the base. It is preferred that the oil component be propylene glycol fatty acid esters or polyethylene glycols. It is also preferred that the Tamibarotene capsule preparation comprise 0.1-50 mg/mL of the Tamibarotene based on the oil component.
