A Coriolis mass flowmeter having at least one measuring tube that is excitable to oscillations, at least one oscillation generator, at least two oscillation sensors for receiving oppositely influenced oscillation parts of the measuring tube oscillation, at least one evaluation unit and at least two holding devices for holding the oscillation sensors, wherein at least one part of an oscillation sensor is attached to each holding device. Additionally, a Coriolis mass flowmeter that requires little service and is easy to repair, is implemented in that the oscillation sensors each comprise at least one primary oscillation sensor and a secondary oscillation sensor, and that the primary oscillation sensor and the secondary oscillation sensor are connected to the evaluation unit in such a manner that the measuring signal of the primary oscillation sensor and the measuring signal of the secondary oscillation sensor can be detected separately by the evaluation unit.