Problem to be solved: to provide a living body information collecting sensor and a living body information collecting device capable of collecting information about the oxygen saturation of the object to be measured and information about the temperature of the portion where the information about the oxygen saturation is collected at the same time.Solution: a light emitting part 2, a light receiving part 3 and 4, a temperature measuring part 5, a body part 10 for accommodating the light emitting part 2, the light receiving part 3, 4 and the temperature measuring part 5 are provided, and the body part 10 has a mounting surface 36 in the direction of the object to be measured when collecting the living body information, and has a mounting surface 36 which is in contact with the object to be measured, and the light emitting part 2, the light receiving part 3, and the like The 4 and temperature measuring part 5 is a biological information collection sensor 1 arranged side by side on the mounting surface 36 side.Diagram【課題】測定対象の酸素飽和度に関する情報と、酸素飽和度に関する情報が収集された部分の温度に関する情報も同時に収集可能な生体情報収集センサ、及び生体情報収集装置を提供する。【解決手段】発光部2と、受光部3,4と、温度計測部5と、発光部2、受光部3,4及び温度計測部5を収容する本体部10を備え、本体部10は生体情報を収集する際に測定対象の側を向き、測定対象と接触する装着面36を有し、発光部2、受光部3,4及び温度計測部5は、装着面36側に並んで配置されている生体情報収集センサ1。【選択図】 図1