The invention discloses a quasi-zero rigidity pressure lever. The quasi-zero rigidity pressure lever is mainly composed of a mechanism with negative rigidity and a vertical spring used for providing positive rigidity, wherein the mechanism is composed of a hemisphere annular protrusion, a universal roller and a spring piece, the universal roller is installed on the spring piece, and the spring piece is supported by an annular sleeve fixed in an outer sleeve to ensure the centering of the hemisphere annular protrusion. Through the parallel combination of the positive and negative rigidity elements, the pressure lever has the features of high static rigidity and low moving rigidity, has zero rigidity at the static balance position, and presents a small rigidity feature at the position near the balance position. The quasi-zero rigidity pressure lever can be installed on various vibration isolation platforms and has the features of high static rigidity and low moving rigidity at all degrees of freedom, and thus low-frequency vibration isolation is achieved.