The invention belongs to the vibration and noise control field, especially relating to a vibration isolating device for rail vehicle, comprising: connecting sleeve and spring vibration isolator, where the connecting sleeve is equipped with support stop and lift stop and comprises upper and lower sleeves, a splitting connecting structure is arranged between the upper and lower sleeves, the support stop is arranged at the upper part of the lower sleeve and the lift stop is arranged at the lower part of the upper sleeve. And the invention has features of compact and reasonable structure, low cost, enlarging the application range of under-roadbed vibration isolating devices, strong practicality, and having both economic and environmental protection effects, able to be applied to thinner rail floating slabs.