The displacement of a round plate supported on a parallel circular squeeze air film was analyzed theoretically and experimentally. The dynamic pressure in the squeeze film was analyzed theoretically. A finite-difference method with steady and cyclic condition was applied to nonlinear simultaneous differential equations ; the Reynolds equation on the squeeze air film and the Kinetic equation on the plate supported in the film. The displacements were measured with automatic measurement system that used micro-computer. The characteristics obtained from numerical solution showed good agreement with the experimental results. The distortion on the displacement of a supported mass was certified theoretically and experimentally.