The invention belongs to the technical field of vibration isolation design and particularly relates to a vibration isolator. The vibration isolator comprises an installation core, an axial vibration isolation component and a radial vibration isolation component, wherein the axial vibration isolation component is provided with an axial vibration isolation cavity, the installation core is arranged to run through the axial vibration isolation cavity and is capable of moving in the axial motion relative to the axial vibration isolation component, and the axial vibration isolation component limitsthe installation core to move in the radial direction; the radial vibration isolation component is provided with a radial vibration isolation cavity and a vibration isolation through hole communicating with the radial vibration isolation cavity; the axial vibration isolation component is arranged inside the radial vibration isolation cavity, one end of the installation core stretches out of the vibration isolation through hole, and the installation core is in clearance fit with the vibration isolation through hole; and the axial vibration isolation component can move in the radial direction relative to the radial vibration isolation component, and the radial vibration isolation component limits the axial vibration isolation component to move in the axial direction.