A biological information measurement device includes: a sensor section (280) which is configured to detect biological information of a test object a processing section (240) which is configured to perform processing of the biological information a power supply section (260) which is configured to supply electric power to the sensor section (240) and the processing section (260) a device main body having a case section (200) in which the sensor section (280), the processing section (240), and the power supply section (260) are accommodated and a band section (34,44) for mounting the device main body on the test object, wherein the weight of the device main body is less than or equal to 60 g, and it is possible to measure biological information continuously for 10 hours or more.
