PROBLEM TO BE SOLVED: To provide a medical patch having elasticity to follow movement even when the application surface is large, good adhesion, and less skin irritation to a flexed portion where joint bending and stretching are repeated. I will provide a. SOLUTION: The medical patch has a support, an adhesive layer covering the surface of the support, and a pad arranged on the adhesive layer, and the support is 4,700. has an area of ～13,000Mm 2, said pad has an area of 1,500～4,500Mm 2, in overlapping portions of the support and the pressure sensitive adhesive layer and the pad, a load of 15N The continuous elongation recovery rate A (outward route) when elongated 20 times is 90% or more, the continuous elongation recovery rate B (return route) is 70% or more, and the value of the ratio B / A of these elongation recovery rates is A medical patch characterized by being 0.5 or more. [Selection diagram] Fig. 1【課題】関節の曲げ伸ばしが繰り返される屈曲部に対して、適用面が大きい場合においても動きに追従する伸縮性を有し、且つ良好な付着性を有し、皮膚刺激が少ない医療用貼付材を提供する。【解決手段】支持体と、該支持体の表面を覆う粘着剤層と、該粘着剤層の上に配置されたパッドとを有する医療用貼付材であって、該支持体は、４，７００～１３，０００ｍｍ２の面積を有し、該パッドは、１，５００～４，５００ｍｍ２の面積を有し、該支持体と該粘着剤層と該パッドの重ね合わせ部分において、１５Ｎの荷重で２０回伸長させた際の連続伸長回復率Ａ（往路）が９０％以上であり、連続伸長回復率Ｂ（復路）が７０％以上であり、そしてこれら伸長回復率の比Ｂ／Ａの値が０．５以上であることを特徴とする、医療用貼付材。【選択図】図１
