The invention discloses a natural frequency-adjustable vertical superconductive magnetic spring oscillator, comprising a test mass, a negative stiffness superconductive coil and a positive stiffness superconductive coil; the negative stiffness superconductive coil is mounted at an opening of a semi-closed space of the test mass, one part of magnetic lines of force of the negative stiffness superconductive coil is located in a closed space of the test mass and is in a compressed state, the other part of the magnetic lines of force of the negative stiffness superconductive coil is located outside the closed space of the test mass and is in an extended state, a vertical magnetic repulsive force applied to the test mass by the negative stiffness superconductive coil is in proportional change along with displacement of the test mass deviating a balance position, and direction of variation is the same with the displacement; and the positive stiffness superconductive coil is mounted inside the semi-closed space of the test mass, a vertical magnetic repulsive force applied to the test mass by the positive stiffness superconductive coil is also in proportional change along with the displacement of the test mass deviating the balance position, but the direction of the variation is opposite to the displacement. The vertical superconductive magnetic spring oscillator disclosed by the invention realizes the effects that the natural frequency of the superconductive magnetic spring oscillator is adjustable and cross-coupling effect of horizontal and vertical freedom degrees of the test mass can be reduced.