A biological information measurement device that performs sound wave communications with an external terminal including a microphone includes a housing； a measurement circuit that measures biological information； a modulation circuit that converts the biological information measured into a sound wave signal； and a vibration member that vibrates based on the sound wave signal transmitted from the modulation circuit. The measurement circuit, the modulation circuit and the vibration member are provided inside the housing. The housing includes a terminal placement surface on which the terminal is placed. The vibration member and the terminal placement surface are in contact with each other so that vibration of the vibration member is transmitted to the terminal placement surface.
