PROBLEM TO BE SOLVED: To provide a method for producing a fibroblast growth-promoting substance capable of acting on skin fibroblasts and promoting growth thereof.SOLUTION: According to the present invention, there is provided a method for producing a fibroblast growth-promoting substance. The method comprises a process of obtaining a parsley leaf extract using parsley leaves and a solvent; and a process of culturing precursor fat cells. The culturing process includes the steps of obtaining a culture solution using a differentiation induction medium containing DMEM, FBS, insulin, and a parsley leaf extract, and, subsequently, further culturing the culture solution obtained in the previous step to obtain a culture solution, and subsequently, collecting a supernatant from the resulting culture solution to obtain a fibroblast growth-promoting substance.SELECTED DRAWING: None【課題】皮膚の線維芽細胞に作用して増殖を促進することができる線維芽細胞の増殖促進物質の製造方法の提供。【解決手段】パセリの葉と溶媒を使用してパセリの葉抽出液を得る工程と前駆脂肪細胞の培養工程を有しており、前記培養工程が、DMEM、FBS、インスリンおよびパセリの葉抽出液を含む分化誘導培地を使用して培養液を得る工程と、その後、前記分化誘導培地からパセリの葉抽出液を除いた培地を使用して、前工程で得られた培養液をさらに培養して培養液を得る工程を含んでおり、その後、得られた培養液の上清液を回収して、線維芽細胞の増殖促進物質を得る工程を有している、線維芽細胞の増殖促進物質の製造方法。【選択図】なし