The heating type oximeter (1) has a heat insulating portion (40) formed in a sheet shape and having heat insulating properties, a heat generating portion (30) formed in a sheet shape and including a resistor which generates heat when energized, and , A first temperature detection section (21) formed in a sheet shape and including a first temperature sr (211) for detecting the temperature of the heat generation section (30), a first temperature detection section (21) formed in a thin plate shape and including light emitting elements (103, An oxygen saturation acquiring unit (12) including a light receiving element (107) for optically acquiring oxygen saturation in the blood, and a third temperature sr (231) formed in a sheet shape and detecting the temperature of the living body And a third temperature detection unit including a third temperature detection unit, an oxygen saturation acquisition unit, a first temperature detection unit, a heat generation unit, ) In this order.加温型オキシメータ(1)は、シート状に形成され、断熱性を有する断熱部(40)と、シート状に形成され、通電されることにより発熱する抵抗体を含む発熱部(30)と、シート状に形成され、発熱部(30)の温度を検出する第1温度センサ(211)を含む第1温度検出部(21)と、薄板状に形成され、発光素子(103,104)及び受光素子(107)を含み、血中の酸素飽和度を光学的に取得する酸素飽和度取得部(12)と、シート状に形成され、生体の温度を検出する第3温度センサ(231)を含む第3温度検出部(23)とを備え、第3温度検出部(23)、酸素飽和度取得部(12)、第1温度検出部(21)、発熱部(30)、断熱部(40)の順に積み重ねられて構成されている。
