The dynamic tracking property of liquid film seal is directly influenced by angle misalignment of seal rings and axial vibration of a shaft.The commonly used spiral groove liquid film seal with a flexibly mounted rotor was selected as an object to analyze the dynamic response characteristics of the compensated ring.A 3-DOF dynamic analysis model for the liquid film seal was built.Reynolds equation with a squeeze effect term discretized numerically using the finite difference method combined with a film thickness equation and dynamic equations in axial and angular directions were solved simultaneously to calculate the response features of the compensated ring's central displacement and angle misalignments.The results showed that the excitation in axial direction makes the compensated ring have a sine oscillation, but the oscillation amplitude fluctuation is only 3.16% of the excitation amplitude; the axial excitation has no effect on the compensated ring's responses in angular directions; with increase in offsets, the effects of stator fixed angle misalignment and rotor initial angle misalignment become more obvious; the rotor can maintain a good angular tracking property to the stator, and the rotor initial angle misalignment can cause itself to have angular vibration.