PROBLEM TO BE SOLVED: To provide a small-sized pressure sensor unit having a simple structure that can be easily mounted on a handy probe, and to provide a method capable of measuring skin viscoelastic property measurement in a short time and an apparatus using the same. To do. SOLUTION: A hemispherical indenter is pushed into the surface of the skin, and the repulsive force received from the skin by the indenter with respect to the elapsed time immediately after that is measured by a pressure sensor having a simple structure, and the obtained measurement data is used. Parameters are calculated when the viscoelastic properties of the skin are approximated by a stress relaxation function of a three-element type standard linear solid model, and the complex elastic modulus of the skin is measured from these parameters. [Selection diagram] Fig. 6【課題】ハンディー型のプローブへの搭載が容易な、構造が簡単で小型の圧力センサユニットを提供し、短時間で皮膚の粘弾性特性測定の測定が可能な方法およびこれを用いた装置を提供する。【解決手段】半球状の圧子を皮膚の表面に押し込み、その直後からの経過時間に対する前記圧子が皮膚から受ける反発力を簡単な構造の圧力センサで測定し、得られた測定データを用いて、皮膚の粘弾性特性を３素子型標準線形固体モデルの応力緩和関数で近似した場合のパラメータを求め、これらのパラメータから、皮膚の複素弾性率を測定する。【選択図】図６
