With development of the urban rail traffic, people now are concentrated on the comfortable of the noise feelings in the cabin. Using SEA method is a good way to solve cabin noise problems. This paper illustrated how to use the test data as the load in the SEA model, considering both structure borne noise and airborne noise. Model results shown that the airborne noise acts important role in the total frequency range. In the low frequency, the floor double wall resonant path is the most important noise transmission path. At frequencies beyond 1000Hz, the sealing form is very important, most of the noise is coming from the door leakage. Panel's vibration predicted and sound pressure level have good correlation with the test data, which means the model gives good simulation to every paths into the cabin.
