PROBLEM TO BE SOLVED: To provide a technique capable of three-dimensionally evaluating the amount of sagging skin by a simpler method. SOLUTION: In a method of measuring the amount of sagging of the skin by superimposing a horizontal skin surface image and a vertical skin surface image, the outer circumference of the skin at an arbitrary distance from the measurement point is accompanied by a change in the shape of the skin. This was solved by using a method of measuring the amount of skin sagging, including the step of providing a deformable enclosure. [Effect] The measuring method of the present invention reflects the unevenness of the measurement site, can measure the amount of sagging of the skin easily and accurately, and can also determine the relationship with the physical condition and change of the skin. , The effect of cosmetics, etc. can be evaluated. [Selection diagram] FIG. 10【課題】皮膚のたるみ量をより簡便な方法で三次元的に評価可能な技術を提供する。【解決手段】水平位皮膚表面画像と垂直位皮膚表面画像を重ねることで、皮膚のたるみ量を測定する方法において、測定点から任意の距離を隔てたた外周に、皮膚の形状変化に伴って変形可能な囲み部を設けるステップを含む皮膚たるみ量の測定方法を用いることでこれを解決した。【効果】本発明の測定方法は、測定部位の凹凸を反映し、簡易かつ精度良く、皮膚のたるみ量を測定することができ、皮膚の物性状態や変化との関係性を判定することもでき、化粧料等の効果を評価することができる。【選択図】図10