To provide a sweat detection device capable of accurately detecting sweat of a living body.SOLUTION: A sweat detection device SD is a device for detecting sweat of a living body using a detection circuit including first and second electrodes 1 and 2 that insulation-coat principal surfaces 1sf and 2sf, and a guide element 3, and includes: a resistance-variable member 4 that varies a resistance value according to a liquid absorption amount; a resonance resistance measuring unit 5 for measuring a resonance resistance value of the detection circuit; and a sweat determination unit 62 for determining a sweat rate on the basis of the resonance resistance value measured by the resonance resistance measuring unit 5. The first and second electrodes 1 and 2 are juxtaposed through the resistance-variable member 4 while coming into contact with the resistance-variable member 4 on the surfaces other than the principal surfaces.SELECTED DRAWING: Figure 1【課題】本発明は、生体の汗をより精度良く検出できる汗検出装置を提供する。【解決手段】本発明の汗検出装置SDは、主面1sf、2sfを絶縁被覆した第1および第2電極1、2と誘導素子3とを含む検出回路を用いて生体の汗を検出する装置であって、液体の吸収量に応じて抵抗値を変える抵抗可変部材4と、前記検出回路の共振抵抗値を測定する共振抵抗測定部5と、共振抵抗測定部5で測定された共振抵抗値に基づいて発汗量を判定する汗判定部62とを備え、第1および第2電極1、2は、前記主面を除く他の面で抵抗可変部材4に接触しつつ抵抗可変部材4を介して並置される。【選択図】図1