The utility model discloses a subway train moves quality of service detection device, the device include detecting element and detect host computer communication connection that detecting element includes inertia measured module, noise detection sensor, temperature detection sensor, humidity detection sensor, air quality testing sensor and mobile phone signal strength detector, detection host computer and treater communication connection for acquire the data that detecting element gathered, and with data transmission to treater, the treater is used for reading the data that detect the host computer conveying and saves line equipment data, circuit track disease data and the historical data that detect, carries out comprehensive assessment according to the data of treater storage to subway train operation quality of service again, obtains subway train operation quality of service's evaluation result to to assess the result transmits to the display and shows. This device has improved the space positioning accuracy of subway train operation quality of service analysis evaluation, and quality of service manages and supervision provides convenient instrument for subway train moves.