<p>An electronic clinical thermometer (100) for measuring the body temperature of a person to be measured includes: a thermistor (10) including a temperature sensing section (11) that measures said body temperature, and a lead (12) having one end connected to the temperature sensing section (11); a control board (20) to which the other end of the lead (12) is connected; a display section (30) that is connected to the control board (20) and that displays said body temperature measured with the thermistor (10); a power source section (40) that supplies electric power to the control board (20); and a sheet-shaped member (50) that is flexible along the length direction and inside which the thermistor (10), the control board (20), the display section (30), and the power source section (40) are arranged. The electronic clinical thermometer (100) is retained in a flexurally deformed state and a torsionally deformed state along the length direction.</p>