Provided is an agent for promoting hyaluronic acid production that has excellent hyaluronic acid production-promoting capability and is effective in the prevention of aging of human skin, particularly in the maintenance of skin firmness and elasticity, and in the prevention and treatment of arthritis etc., and also in the early treatment etc. of sunburn. The agent for promoting hyaluronic acid production provided by the present invention comprises Dioscorea esculenta or an extract thereof. The Dioscorea esculenta is used in the form of a dried power or tuber of the plant in the agent for promoting hyaluronic acid production of the present invention.本發明開發具有良好玻尿酸產生促進作用，對人類皮膚老化的防止，特別是主要對皮膚張力或彈力的保持、關節炎的預防‧治療、燒燙傷初期治療有效的玻尿酸產生促進劑。本發明提供含有甘薯植物體或其萃取物的玻尿酸產生促進劑。在本發明之玻尿酸產生促進劑中，上述植物體可為甘薯植物體的乾燥粉末或塊莖。
