A Coriolis mass flow meter includes: a measuring tube for guiding a medium; a support body connected to the measuring tube on the inlet side and on the outlet side; an exciter for exciting bending vibrations of the measuring tube; at least two vibration sensors for detecting vibrations of the measuring tube; and a reinforcing body fastened to a lateral surface of the measuring tube and surrounds the measuring tube, the reinforcing body including, at least in sections, a helical course with a plurality of windings, a distance between two adjacent windings of the reinforcing body being not less than twice, for example, not less than four times or not less than eight times, a material thickness of the reinforcing body in the region of the windings.