Provided is a bone conduction speaker unit which can sufficiently prevent generation of sound leakage at non-calling. The bone conduction speaker unit includes a bone conduction speaker main body, being incorporated in a housing with an elastic base being interposed, an elastic cover being mounted on a top face of the housing. Bonding between a rear face of the bone conduction speaker main body and a top face of the elastic base, and/or bonding between the elastic base and an inner bottom face of the housing are partially made; upon the elastic cover having been mounted on the housing, a gap is held between an internal top face of the elastic cover and a top face of the bone conduction speaker main body; and with the elastic cover being pressed in use, the internal top face thereof is abutted against the top face of the bone conduction speaker main body.