The utility model belongs to the field of performance test of a sensor, particularly relates to a low-frequency vibration generator with a magnetic suspension structure. The vibration generator comprises two magnets, namely a suspended magnet and a coiling group, wherein the two magnets are fixed at the upper end and the lower end of the vibration generator, the suspended magnet is arranged between the two magnets, the magnetic field directions of the two magnets are opposite, and the acting force between the two magnets is lager than the gravity of the suspended magnet. The low-frequency vibration generator with a magnetic suspension structure solves the technical problems in the prior art that the sensitivity of the vibration generator is limited by a leaf spring, the driving current is affected by external interferences, and the amplitude of small vibration is unstable; and achieves the purpose of generating small vibration with large electricity.