This paper studies the hydrostatic thrust bearings dynamic characteristics of the circular worktable, using a constant-flow pump flow compensation. The purpose is to explore how to use analysis and calculation worktable in different flow compensation and harmonic force, to compare the dynamic characteristics and parameters affect the results of the worktable. Based on Reynolds equation to derived pressure distribution further establish the flow equation, solve these couple equations, which are solved for dimensionless recess region pressures on worktable. The solutions of these coupled equations provide the static and dynamic amplitudes of worktable.