Biological sound measurement device

A biological sound measurement device configured to measure a biological sound of a subject comprising:

• a sound measurement unit including a contact surface configured to be brought into contact with the body surface of the subject;
• and
• a gripping portion having a columnar shape supporting the sound measurement unit and configured to be gripped by a measurer, wherein
• a back surface of the sound measurement unit is fixed to one surface on one end side of the gripping portion, and a recessed portion for placement of an index finger in order for the measurer gripping the gripping portion to press the back surface of the sound measurement unit is formed on a surface that is an opposite side to the one surface,
• at least a first region of a front surface of the gripping portion, excluding a region to be covered by a hand of the measurer in a state in which the gripping portion is gripped by the measurer, is a region not including an angular portion, and an arithmetic mean roughness of the first region is 0.2 or less, and
• a longitudinal direction of the gripping portion having a columnar shape intersects a contact surface of the sound measurement unit, and the gripping portion is positioned away from the body surface when the contact surface is brought into contact with the body surface of the subject.