The technology of operation response analysis and laser scanning vibrometer with type of PSV-400-B are used to get the operation response parameters of train automatic door, including frequency and vibration mode.The experimental program and the system diagram, which are for the test to obtain the operation response parameters under GB/T 21563-2008 simulating long-life random vibration environment, are offered. The accuracy of the laser scanning vibrometer is proved. Three kinds of scanning measuring point arrangement for the type of train automatic door, which is ①door including glass window, ②door not including glass window, ③glass window only, are selected. The 1st operation response parameters, including operation response frequency and its vibration mode, are obtained from the three kinds of scanning objects.