The purpose of the present disclosure is to provide a heat sensitive sheet having an excellent wearing feeling both in an initial state and in use. This heat sensitive sheet has the following configuration. This heat sensitive sheet (1) includes a liquid-holding, liquid-permeable skin-contacting sheet (7), and a liquid-impermeable clothing-contacting sheet (11), and has a thickness direction (T). The heat sensitive sheet (1) has a heat sensitive layer (17) including a heat sensitive liquid composition which includes a heat sensitive agent activating a TRP channel of mammals and a solvent, and does not have a heat generating agent. The heat sensitive sheet (1) is characterized by having a stiffness change rate of 4.0 or less in a predetermined direction within a heat sensitive layer overlap region which overlaps the heat sensitive layer (17) in the thickness direction (T), wherein the stiffness change rate is the ratio of 3h stiffness to 0h stiffness.本揭示係以提供一種初期及使用時之兩方皆佩帶感優異的溫感薄片為目的。本揭示之溫感薄片，係具有以下構成。一種溫感薄片(1)，係包含：具有液體保持性且具有液體穿透性的肌膚抵接薄片(7)、具有液體非穿透性的衣服抵接薄片(11)，並具有厚度方向(T)；其特徵為：溫感薄片(1)，係具有：溫感層(17)，係含有：含有使哺乳類的瞬態受體電位通道(Transient receptor potential channel)活化的溫感劑以及溶劑之液狀的溫感組成物，且不含有發熱劑；溫感薄片(1)，係在與溫感層(17)於前述厚度方向(T)重疊的溫感層重疊區域，具有4.0以下之預定方向中的硬挺度變化率；前述硬挺度變化率，係相對於0h硬挺度的3h硬挺度之比。
