To achieve a biological data measurement device that is simple in configuration, readily put on a human body and inexpensive, and has a patch with no increase in the number of wiring even if put on a plurality of portions of the human body.SOLUTION: A patch 100 put on a human body is basically composed of: first and second thermal insulating bodies 111 and 112; first and second temperature measurement circuits 130 and 140; and a belt-like wiring film (bus wiring) 120, and thus, the patch has a simple constitution, for example, the patch can be about several millimeters in thickness and about several grams in weight, is readily put on the human body and is inexpensive. A selection circuit is mounted to the patch, and a temperature signal of a first thermometer 130 and a temperature signal of a second thermometer 140 are caused to be selectively output at a predetermined timing. Thereby, when the patch 100 is put on a plurality of portions of the human body, the number of wiring is enough by one patch, so the number of wiring can be dramatically reduced in comparison with a conventional one.SELECTED DRAWING: Figure 1【課題】構成が簡単で人体に装着しやすくかつ安価であり、人体の複数個所に装着する場合でも、配線数が増えることがないパッチを有する生体データ測定装置を得る。【解決手段】人体に装着するパッチ100は、基本的に、第1,第2断熱体111,112、第1,第2測温回路130,140および帯状の配線膜(バス配線)120より構成されるため、構成が簡単で例えば数mm程度の厚さ、数g程度の重さにすることができ、人体に装着しやすくかつ安価であり、選択回路を搭載して第1温度計130の温度信号と第2温度計140の温度信号を所定のタイミングで選択的に出力させることにより、パッチ100を人体の複数個所に装着する場合でも配線数は1パッチ分でよく、従来に比べて配線数を飛躍的に減らすことができる。【選択図】図1