To study the frequency and vibration characteristics as well as the actual vibration damping effection regarded to the transition region vibration induced by the urban rail transit, many testing work are carried out on various damping measures in Beijing subway. Through the example of the analysis to DT- VI2 type fastener and steel spring floating slab track bed transition section, this study finds that the anti- vibration effection has been influenced on both sides of the junction within 100m range and takes other anti-vibration to test and verify. According to the amount of test, it is indicated that: The vibration energy of different damping measures on both sides of transition changes and also the frequency distribution has changed. Therefore, the anti-vibration effection on both sides of the junction within 100m range shows a linear trend. In addition, a prediction formula has been proposed about the damping effect of the transition section by extensive testing analysis and verification.