Abstract: A biological information measurement system includes a light emitting portion, a light receiving portion, a light detection portion, a wireless transmission portion, a reception portion that receives information to specify a change corresponding to an increase or a decrease in the concentration or the amount of hemoglobin, wirelessly transmitted from the wireless transmission portion, and a determination portion that monitors information regarding a change in a blood flow based on the information for specifying a change corresponding to an increase or a decrease in the concentration or the amount of hemoglobin, received by the reception portion, over time, and determines whether or not a rate of the change in a blood flow exceeds a predetermined reference value in a case where there is a change in the information regarding a change in a blood flow according to a timing of chest compressions of the subject.