In order to explore the accuracy and maneuverability of air spring damping test, the damping experiments theory of free vibration, foundation excitation and half power bandwidth were described, then the air spring damping was studied experimentally and the difference and accuracy of damping results of different test methods were compared. The results showed that the three test methods of air spring damping were operable. The ideal attenuation waveform was difficult to be obtained by the free vibration method because of the influence of the material and structure characteristic of air bag; Half power bandwidth method was greatly affected by test frequency resolution and the extraction of the half power point, there was often a little error in the test results; The foundation excitation method could obtain the real damping characteristic of air spring, but the theory and test curve of displacement transmissibility in the high frequency region were poor compliance. The research provided a reference for air spring damping test.